User:SuperWIKI/sandbox/State deans (5)

For senators and representatives who represented defunct parties or switched parties intra-term, only their latest party while in office is reflected. Most states, due to not having long-running deans until the 1900s, have tables only starting from that decade.

Massachusetts (TO CHECK)

Senior members of Massachusetts's congressional delegation (1829–present)
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)
21st	March 4, 1829 – March 4, 1831	Nathaniel Silsbee^[A] Seniority from May 31, 1826^[a] (8 years, 276 days) (retired)	Reed (House) Seniority from March 4, 1821 (19 years, 364 days)	John Reed Jr.^[B]^[C] Seniority from March 4, 1821^[b] (20 years, 0 days) (retired)
22nd	March 4, 1831 – March 4, 1833
23rd	March 4, 1833 – March 4, 1835
24th	March 4, 1835 – March 4, 1837	Daniel Webster^[D]^[A] Seniority from June 8, 1827^[c] (13 years, 259 days) (appointed Secretary of State)
25th	March 4, 1837 – March 4, 1839
26th	March 4, 1839 – February 22, 1841
26th	February 22, 1841 – March 4, 1841	Isaac C. Bates^[A] Seniority from January 13, 1841^[a] (4 years, 62 days) (died)
27th	March 4, 1841 – March 4, 1843		Co-deans: Adams, Briggs (House) Seniority from March 4, 1831 (11 years, 364 days)	Co-deans: John Quincy Adams, George N. Briggs Seniority from March 4, 1831 (11 years, 364 days) (Briggs retired)
28th	March 4, 1843 – March 4, 1845		Adams (House) Seniority from March 4, 1831 (16 years, 356 days)	John Quincy Adams^[E] Seniority from March 4, 1831 (16 years, 356 days) (died)
29th	March 4, 1845 – March 16, 1845
29th	March 16, 1845 – March 4, 1847	Daniel Webster^[F] Seniority from March 4, 1845 (5 years, 140 days) (appointed Secretary of State)
30th	March 4, 1847 – February 23, 1848
30th	February 23, 1848 – March 4, 1849		Hudson (House) Seniority from May 3, 1841 (7 years, 304 days)	Charles Hudson Seniority from May 3, 1841^[d] (7 years, 304 days) (lost re-election)
31st	March 4, 1849 – July 22, 1850		Winthrop^[G] (House and Senate) Seniority from November 29, 1842 (8 years, 64 days)	Robert C. Winthrop^[H]^[C] Seniority from November 29, 1842^[d] (7 years, 243 days) (appointed to Senate)
	July 22, 1850 – July 30, 1850	John Davis^[I] Seniority from March 24, 1845^[a] (7 years, 344 days) (retired)
	July 30, 1850 – February 1, 1851			Julius Rockwell Seniority from March 4, 1843 (7 years, 364 days) (retired)^[2]
	February 1, 1851 – March 4, 1851		Rockwell (House) Seniority from March 4, 1843 (7 years, 364 days)
32nd	March 4, 1851 – March 4, 1853		Davis (Senate) Seniority from March 24, 1845 (7 years, 344 days)	Horace Mann Seniority from April 3, 1848^[d] (4 years, 334 days) (retired)^[3]
33rd	March 4, 1853 – March 4, 1855	Charles Sumner^[J]^[K] Seniority from April 25, 1851^[c] (22 years, 320 days) (died)	Appleton (House) Seniority from March 4, 1851 (3 years, 364 days)	William Appleton Seniority from March 4, 1851^[e] (3 years, 364 days) (lost re-election)
34th	March 4, 1855 – March 4, 1857		Sumner (Senate) Seniority from April 25, 1851 (22 years, 320 days)	Co-deans: Nathaniel P. Banks,^[L] Alexander De Witt Seniority from March 4, 1853 (3 years, 364 days) (De Witt lost re-election)^[4]
35th	March 4, 1857 – December 24, 1857			Nathaniel P. Banks Seniority from March 4, 1853 (4 years, 295 days) (elected Massachusetts governor)
35th	December 24, 1857 – March 4, 1859			James Buffington Seniority from March 4, 1855^[e] (3 years, 364 days) (co-dean after retirements of Chaffee, Comins, Damrell, and Hall)
36th	March 4, 1859 – March 4, 1861			Co-deans: James Buffington, Anson Burlingame Seniority from March 4, 1855 (5 years, 364 days) (Burlingame lost re-election)
37th	March 4, 1861 – March 4, 1863			James Buffington Seniority from March 4, 1855 (7 years, 364 days) (retired)
38th	March 4, 1863 – March 4, 1865			Henry L. Dawes^[M] Seniority from March 4, 1857 (17 years, 364 days) (elected to Senate)
39th	March 4, 1865 – March 4, 1867
40th	March 4, 1867 – March 4, 1869
41st	March 4, 1869 – March 4, 1871
42nd	March 4, 1871 – March 4, 1873
43rd	March 4, 1873 – March 11, 1874
43rd	March 11, 1874 – March 4, 1875	George S. Boutwell^[A] Seniority from March 17, 1873^[a] (3 years, 351 days) (lost renomination)	Dawes (House and Senate) Seniority from March 4, 1857 (35 years, 364 days)
44th	March 4, 1875 – March 7, 1875			James Buffington^[N] Seniority from March 4, 1869^[b] (6 years, 3 days) (died)
44th	March 7, 1875 – March 4, 1877			George F. Hoar Seniority from March 4, 1869 (7 years, 364 days) (elected to Senate)
45th	March 4, 1877 – March 4, 1879	Henry L. Dawes^[A] Seniority from March 4, 1875 (17 years, 364 days) (retired)		Benjamin W. Harris Seniority from March 4, 1873 (9 years, 364 days) (retired)
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 4, 1883
48th	March 4, 1883 – January 7, 1884			Leopold Morse Seniority from March 4, 1877^[e] (6 years, 309 days) (co-dean after Robinson became Massachusetts governor)
48th	January 7, 1884 – March 4, 1885			Co-deans: Leopold Morse (D), William W. Rice (R) Seniority from March 4, 1877 (7 years, 364 days) (Morse retired)
49th	March 4, 1885 – March 4, 1887			William W. Rice Seniority from March 4, 1877 (9 years, 364 days) (retired)^[5]
50th	March 4, 1887 – March 4, 1889			Patrick Collins Seniority from March 4, 1883^[e] (5 years, 364 days) (retired)
51st	March 4, 1889 – March 4, 1891			Francis W. Rockwell Seniority from January 17, 1884^[d] (7 years, 45 days) (lost re-election)
52nd	March 4, 1891 – March 4, 1893			Co-deans: William Cogswell, Henry Cabot Lodge Seniority from March 4, 1887 (5 years, 364 days) (Lodge elected to Senate)
53rd	March 4, 1893 – March 4, 1895	George F. Hoar^[A] Seniority from March 4, 1877 (27 years, 210 days) (died)	Hoar (House and Senate) Seniority from March 4, 1869 (35 years, 210 days)	William Cogswell Seniority from March 4, 1887 (8 years, 79 days) (died)
54th	March 4, 1895 – May 22, 1895
54th	May 22, 1895 – March 4, 1897			Co-deans: Elijah A. Morse, Joseph H. Walker Seniority from March 4, 1889 (7 years, 364 days) (Morse retired)
55th	March 4, 1897 – March 4, 1899			Joseph H. Walker Seniority from March 4, 1889 (9 years, 364 days) (lost re-election)
56th	March 4, 1899 – March 4, 1901			Co-deans: Frederick H. Gillett, Samuel W. McCall Seniority from March 4, 1893 (19 years, 364 days) (McCall ran for Senate)
57th	March 4, 1901 – March 4, 1903
58th	March 4, 1903 – September 30, 1904
58th	September 30, 1904 – March 4, 1905	Henry Cabot Lodge^[O]^[A] Seniority from March 4, 1893 (31 years, 250 days) (died)	Lodge (House and Senate) Seniority from March 4, 1887 (37 years, 250 days)
59th	March 4, 1905 – March 4, 1907
60th	March 4, 1907 – March 4, 1909
61st	March 4, 1909 – March 4, 1911
62nd	March 4, 1911 – March 4, 1913
63rd	March 4, 1913 – March 4, 1915			Frederick H. Gillett^[P] Seniority from March 4, 1893 (31 years, 364 days) (elected to Senate)
64th	March 4, 1915 – March 4, 1917
65th	March 4, 1917 – March 4, 1919
66th	March 4, 1919 – March 4, 1921
67th	March 4, 1921 – March 4, 1923
68th	March 4, 1923 – November 9, 1924
68th	November 9, 1924 – March 4, 1925	David I. Walsh Seniority from March 4, 1919 (5 years, 364 days) (lost re-election)	Gillett (House and Senate) Seniority from March 4, 1893 (37 years, 364 days)
69th	March 4, 1925 – March 28, 1925	William M. Butler Seniority from November 13, 1924^[f] (2 years, 23 days) (lost election to finish term)		Co-deans: John J. Rogers, Allen T. Treadway Seniority from March 4, 1913 (12 years, 24 days) (Rogers died)
	March 28, 1925 – December 6, 1926			Allen T. Treadway Seniority from March 4, 1913 (31 years, 305 days) (retired)
	December 6, 1926 – March 4, 1927	Frederick H. Gillett^[A] Seniority from March 4, 1925 (5 years, 364 days) (retired)
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – March 4, 1931
72nd	March 4, 1931 – March 4, 1933	David I. Walsh^[F] Seniority from December 6, 1926^[g] (20 years, 28 days) (lost re-election)	Treadway (House) Seniority from March 4, 1913 (31 years, 305 days)
73rd	March 4, 1933 – January 3, 1935
74th	January 3, 1935 – January 3, 1937
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – January 3, 1941
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945
79th	January 3, 1945 – January 3, 1947		Gifford (House) Seniority from November 7, 1922 (24 years, 289 days)	Charles L. Gifford Seniority from November 7, 1922^[d] (24 years, 289 days) (died)
80th	January 3, 1947 – August 23, 1947	Leverett Saltonstall Seniority from January 4, 1945^[h]^[g] (21 years, 364 days) (retired)
80th	August 23, 1947 – January 3, 1949		Martin (House) Seniority from March 4, 1925 (41 years, 305 days)	Joseph W. Martin Jr.^[Q] Seniority from March 4, 1925 (41 years, 305 days) (lost renomination)
81st	January 3, 1949 – January 3, 1951
82nd	January 3, 1951 – January 3, 1953
83rd	January 3, 1953 – January 3, 1955
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 3, 1959
86th	January 3, 1959 – January 3, 1961
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – January 3, 1965
89th	January 3, 1965 – January 3, 1967
90th	January 3, 1967 – January 3, 1969	Ted Kennedy Seniority from November 7, 1962^[g] (46 years, 291 days) (died)	McCormack (House) Seniority from November 6, 1928 (42 years, 58 days)	John W. McCormack^[R] Seniority from November 6, 1928^[d] (42 years, 58 days) (retired)
91st	January 3, 1969 – January 3, 1971
92nd	January 3, 1971 – January 3, 1973		Donohue (House) Seniority from January 3, 1947 (27 years, 362 days)	Harold Donohue Seniority from January 3, 1947 (27 years, 362 days) (resigned)
93rd	January 3, 1973 – December 31, 1974
93rd	December 31, 1974 – January 3, 1975		Co-deans: Boland, O'Neill (House) Seniority from January 3, 1953 (34 years, 0 days)	Co-deans: Edward Boland, Tip O'Neill^[S] Seniority from January 3, 1953 (34 years, 0 days) (O'Neill retired)
94th	January 3, 1975 – January 3, 1977
95th	January 3, 1977 – January 3, 1979
96th	January 3, 1979 – January 3, 1981
97th	January 3, 1981 – January 3, 1983
98th	January 3, 1983 – January 3, 1985
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989		Boland (House) Seniority from January 3, 1953 (36 years, 0 days)	Edward Boland Seniority from January 3, 1953 (36 years, 0 days) (retired)
101st	January 3, 1989 – January 3, 1991		Conte (House) Seniority from January 3, 1959 (32 years, 36 days)	Silvio O. Conte Seniority from January 3, 1959 (32 years, 36 days) (died)
102nd	January 3, 1991 – February 8, 1991
102nd	February 8, 1991 – January 3, 1993		Kennedy (Senate) Seniority from November 7, 1962 (46 years, 291 days)	Co-deans: Joe Moakley, Gerry Studds Seniority from January 3, 1973 (24 years, 0 days) (Studds retired)
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997
105th	January 3, 1997 – January 3, 1999			Joe Moakley Seniority from January 3, 1973 (28 years, 145 days) (died)
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – May 28, 2001
107th	May 28, 2001 – January 3, 2003			Ed Markey Seniority from November 2, 1976^[d] (36 years, 255 days) (elected to Senate)
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – January 3, 2007
110th	January 3, 2007 – January 3, 2009
111th	January 3, 2009 – August 25, 2009
111th	August 25, 2009 – January 3, 2011	John Kerry Seniority from January 2, 1985^[f] (28 years, 30 days) (appointed Secretary of State)	Markey^[G] (House and Senate) Seniority from November 2, 1976 (47 years, 324 days)
112th	January 3, 2011 – January 3, 2013
113th	January 3, 2013 – February 1, 2013
	February 1, 2013 – July 15, 2013	Elizabeth Warren Seniority from January 3, 2013 (11 years, 262 days) (Incumbent)
	July 15, 2013 – January 3, 2015			Richard Neal Seniority from January 3, 1989 (35 years, 262 days) (Incumbent)
114th	January 3, 2015 – January 3, 2017
115th	January 3, 2017 – January 3, 2019
116th	January 3, 2019 – January 3, 2021
117th	January 3, 2021 – January 3, 2023
118th	January 3, 2023 – present
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)

Michigan

Senior members of Michigan's congressional delegation
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean(s) (Combined seniority and tenure)	House dean(s) (Seniority and tenure) (Cause of departure)
24th	January 26, 1837 – March 4, 1837	Lucius Lyon^[T] Seniority from January 26, 1837^[i] (2 years, 36 days) (retired)	Lyon (Senate) Seniority from January 26, 1837^[j] (2 years, 36 days)	Isaac E. Crary^[U] Seniority from January 26, 1837 (4 years, 36 days) (retired)
25th	March 4, 1837 – March 4, 1839
26th	March 4, 1839 – January 20, 1840	John Norvell Seniority from January 26, 1837 (4 years, 36 days) (retired)	No clear dean^[k]
26th	January 20, 1840 – March 4, 1841		Co-deans: Norvell (Senate) Crary (House) Seniority from January 26, 1837 (4 years, 36 days)
27th	March 4, 1841 – March 4, 1843	Augustus Porter Seniority from January 20, 1840^[c] (5 years, 42 days) (retired)	Porter (Senate) Seniority from January 20, 1840 (5 years, 42 days)	Jacob M. Howard^[U] Seniority from March 4, 1841 (1 year, 364 days) (lost re-election)
28th	March 4, 1843 – March 4, 1845			Lucius Lyon^[V] Seniority from March 4, 1843^[b] (1 year, 364 days) (retired)^[6]
29th	March 4, 1845 – March 4, 1847	William Woodbridge^[T] Seniority from March 4, 1841 (5 years, 364 days) (retired)	Woodbridge (Senate) Seniority from March 4, 1841 (5 years, 364 days)	Co-deans: James B. Hunt, Robert McClelland Seniority from March 4, 1843 (3 years, 364 days) (Hunt retired)
30th	March 4, 1847 – May 29, 1848	Lewis Cass Seniority from March 4, 1845 (3 years, 86 days) (ran for President)^[7]	McClelland (House) Seniority from March 4, 1843 (5 years, 364 days)	Robert McClelland Seniority from March 4, 1843 (5 years, 364 days) (retired)^[8]
30th	May 29, 1848 – March 4, 1849	Alpheus Felch Seniority from March 4, 1847 (5 years, 364 days) (retired)
31st	March 4, 1849 – March 4, 1851		Co-deans: Felch (Senate) Bingham (House) Seniority from March 4, 1847 (3 years, 364 days)	Kinsley Bingham Seniority from March 4, 1847 (3 years, 364 days) (retired)^[9]
32nd	March 4, 1851 – March 4, 1853		Felch (Senate) Seniority from March 4, 1847 (5 years, 364 days)	Charles E. Stuart Seniority from March 4, 1851^[b] (1 year, 364 days) (elected to Senate)
33rd	March 4, 1853 – March 4, 1855	Lewis Cass^[F]^[W] Seniority from March 4, 1849^[a] (7 years, 364 days) (retired)	Cass (Senate) Seniority from March 4, 1849 (7 years, 364 days)	Samuel Clark Seniority from March 4, 1853^[b] (1 year, 364 days) (lost re-election)
34th	March 4, 1855 – March 4, 1857			No clear dean^[l]^[m]
35th	March 4, 1857 – March 4, 1859	Charles E. Stuart^[X]^[A] Seniority from March 4, 1853 (5 years, 364 days) (retired)	Stuart (House and Senate) Seniority from March 4, 1851 (7 years, 364 days)	William A. Howard Seniority from March 4, 1855^[e] (3 years, 364 days) (retired)^[10]
36th	March 4, 1859 – March 4, 1861	Zachariah Chandler^[Y] Seniority from March 4, 1857 (17 years, 364 days) (lost re-election)	Waldron (House) Seniority from March 4, 1855 (5 years, 364 days)	Henry Waldron Seniority from March 4, 1855 (5 years, 364 days) (retired)^[11]
37th	March 4, 1861 – March 4, 1863		Chandler (Senate) Seniority from March 4, 1857 (17 years, 364 days)	Francis W. Kellogg Seniority from March 4, 1859 (5 years, 364 days) (retired)
38th	March 4, 1863 – March 4, 1865
39th	March 4, 1865 – March 4, 1867			Fernando C. Beaman Seniority from March 4, 1861 (9 years, 364 days) (retired)^[12]
40th	March 4, 1867 – March 4, 1869
41st	March 4, 1869 – March 4, 1871
42nd	March 4, 1871 – March 4, 1873			Austin Blair Seniority from March 4, 1867 (5 years, 364 days) (ran for Michigan governor)^[13]
43rd	March 4, 1873 – March 4, 1875			Omar D. Conger Seniority from March 4, 1869 (11 years, 364 days) (elected to Senate)^[14]
44th	March 4, 1875 – March 4, 1877	Thomas W. Ferry^[Z]^[A] Seniority from March 4, 1871 (11 years, 364 days) (lost re-election)	Ferry (House and Senate) Seniority from March 4, 1865 (17 years, 364 days)
45th	March 4, 1877 – March 4, 1879
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 4, 1883			Jay Hubbell Seniority from March 4, 1873 (9 years, 364 days) (retired)
48th	March 4, 1883 – March 4, 1885	Omar D. Conger^[A] Seniority from March 4, 1881 (5 years, 364 days) (lost renomination)^[14]	Conger (House and Senate) Seniority from March 4, 1869 (17 years, 364 days)	Roswell G. Horr Seniority from March 4, 1879 (5 years, 364 days) (lost re-election)^[15]
49th	March 4, 1885 – March 4, 1887			Ezra C. Carleton Seniority from March 4, 1883^[e] (3 years, 364 days) (retired)
50th	March 4, 1887 – March 4, 1889	Thomas W. Palmer Seniority from March 4, 1883 (5 years, 364 days) (retired)^[16]	Co-deans: Palmer (Senate) Cutcheon (House) Seniority from March 4, 1883 (5 years, 364 days)	Byron M. Cutcheon Seniority from March 4, 1883 (7 years, 364 days) (lost re-election)^[17]
51st	March 4, 1889 – March 4, 1891	Francis B. Stockbridge Seniority from March 4, 1887 (7 years, 57 days) (died)	Cutcheon (House) Seniority from March 4, 1883 (7 years, 364 days)
52nd	March 4, 1891 – March 4, 1893		Burrows (House and Senate) Seniority from March 4, 1885 (25 years, 364 days)	Julius C. Burrows^[C] Seniority from March 4, 1885^[b] (9 years, 325 days) (elected to Senate)
53rd	March 4, 1893 – April 30, 1894
	April 30, 1894 – January 24, 1895	James McMillan Seniority from March 4, 1889 (13 years, 159 days) (died)
	January 24, 1895 – March 4, 1895			Justin Rice Whiting Seniority from March 4, 1887 (7 years, 364 days) (retired)
54th	March 4, 1895 – March 4, 1897			Samuel M. Stephenson Seniority from March 4, 1889 (7 years, 364 days) (retired)
55th	March 4, 1897 – March 4, 1899			Roswell P. Bishop Seniority from March 4, 1895^[e] (6 years, 58 days) (co-dean after Crump's death)
56th	March 4, 1899 – March 4, 1901
57th	March 4, 1901 – May 1, 1901
	May 1, 1901 – August 10, 1902			Co-deans: Roswell P. Bishop John B. Corliss Seniority from March 4, 1895 (7 years, 364 days) (Corliss lost re-election)^[18]
	August 10, 1902 – March 4, 1903	Julius C. Burrows^[A] Seniority from January 24, 1895^[a] (16 years, 38 days) (lost renomination)^[19]
58th	March 4, 1903 – March 4, 1905			Roswell P. Bishop Seniority from March 4, 1895 (11 years, 364 days) (lost renomination)^[20]
59th	March 4, 1905 – March 4, 1907
60th	March 4, 1907 – March 4, 1909			Co-deans: Edward L. Hamilton, Samuel W. Smith Seniority from March 4, 1897 (17 years, 364 days) (Smith retired)^[21]
61st	March 4, 1909 – March 4, 1911
62nd	March 4, 1911 – March 4, 1913	William Alden Smith^[A] Seniority from February 6, 1907^[a]^[22] (12 years, 25 days) (retired)	W. Smith (House and Senate) Seniority from March 4, 1895 (23 years, 364 days)
63rd	March 4, 1913 – March 4, 1915
64th	March 4, 1915 – March 4, 1917			Edward L. Hamilton Seniority from March 4, 1897 (23 years, 364 days) (retired)^[23]
65th	March 4, 1917 – March 4, 1919
66th	March 4, 1919 – March 4, 1921	Charles E. Townsend^[A] Seniority from March 4, 1911 (11 years, 364 days) (lost re-election)	Hamilton (House) Seniority from March 4, 1897 (23 years, 364 days)
67th	March 4, 1921 – March 4, 1923		Fordney (House) Seniority from March 4, 1899 (23 years, 364 days)	Joseph W. Fordney Seniority from March 4, 1899 (23 years, 364 days) (retired)
68th	March 4, 1923 – March 4, 1925	James Couzens Seniority from November 29, 1922^[f] (13 years, 328 days) (died)	McLaughlin (House) Seniority from March 4, 1907 (25 years, 270 days)	James C. McLaughlin Seniority from March 4, 1907 (25 years, 270 days) (died)
69th	March 4, 1925 – March 4, 1927
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – March 4, 1931
72nd	March 4, 1931 – November 29, 1932
72nd	November 29, 1932 – March 4, 1933		Mapes (House) Seniority from March 4, 1913 (26 years, 283 days)	Carl E. Mapes Seniority from March 4, 1913 (26 years, 283 days) (died)
73rd	March 4, 1933 – January 3, 1935
74th	January 3, 1935 – October 22, 1936
74th	October 22, 1936 – January 3, 1937	Arthur Vandenberg^[AA] Seniority from March 31, 1928^[f] (23 years, 18 days) (died)
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – December 12, 1939
76th	December 12, 1939 – January 3, 1941		Woodruff (House) Seniority from March 4, 1921 (31 years, 305 days)	Roy O. Woodruff^[C] Seniority from March 4, 1921 (31 years, 305 days) (retired)
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945
79th	January 3, 1945 – January 3, 1947
80th	January 3, 1947 – January 3, 1949
81st	January 3, 1949 – January 3, 1951
82nd	January 3, 1951 – April 18, 1951
82nd	April 18, 1951 – January 3, 1953	Homer S. Ferguson Seniority from January 3, 1943 (12 years, 0 days) (lost re-election)
83rd	January 3, 1953 – January 3, 1955		Wolcott (House) Seniority from March 4, 1931 (25 years, 305 days)	Jesse P. Wolcott Seniority from March 4, 1931 (25 years, 305 days) (retired)
84th	January 3, 1955 – January 3, 1957	Charles E. Potter^[A] Seniority from November 5, 1952^[g] (6 years, 59 days) (lost re-election)
85th	January 3, 1957 – January 3, 1959		Hoffman (House) Seniority from January 3, 1935 (28 years, 0 days)	Clare Hoffman Seniority from January 3, 1935 (28 years, 0 days) (retired)
86th	January 3, 1959 – January 3, 1961	Patrick V. McNamara Seniority from January 3, 1955 (11 years, 117 days) (died)
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – August 9, 1964		Bennett (House) Seniority from January 3, 1947 (17 years, 219 days)	John B. Bennett^[C] Seniority from January 3, 1947 (17 years, 219 days) (died)
88th	August 9, 1964 – January 3, 1965		Ford (House) Seniority from January 3, 1949 (24 years, 337 days)	Gerald Ford^[AB] Seniority from January 3, 1949 (24 years, 337 days) (became Vice President)
89th	January 3, 1965 – April 30, 1966
89th	April 30, 1966 – January 3, 1967	Philip Hart Seniority from January 3, 1959 (17 years, 358 days) (died)
90th	January 3, 1967 – January 3, 1969
91st	January 3, 1969 – January 3, 1971
92nd	January 3, 1971 – January 3, 1973
93rd	January 3, 1973 – December 6, 1973
93rd	December 6, 1973 – January 3, 1975		Cederberg (House) Seniority from January 3, 1953 (25 years, 362 days)	Al Cederberg Seniority from January 3, 1953 (25 years, 362 days) (resigned)
94th	January 3, 1975 – December 26, 1976
94th	December 26, 1976 – January 3, 1977	Robert P. Griffin^[A] Seniority from May 11, 1966^[f] (12 years, 237 days) (lost re-election)
95th	January 3, 1977 – December 31, 1978
95th	December 31, 1978 – January 3, 1979		Diggs (House) Seniority from January 3, 1955 (25 years, 152 days)	Charles Diggs Seniority from January 3, 1955 (25 years, 152 days) (resigned)
96th	January 3, 1979 – June 3, 1980	Donald Riegle^[A] Seniority from December 30, 1976^[f] (18 years, 4 days) (retired)
96th	June 3, 1980 – January 3, 1981		Dingell (House) Seniority from December 13, 1955 (59 years, 21 days)	John Dingell^[AC] Seniority from December 13, 1955^[d] (59 years, 21 days) (retired)
97th	January 3, 1981 – January 3, 1983
98th	January 3, 1983 – January 3, 1985
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989
101st	January 3, 1989 – January 3, 1991
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997	Carl Levin Seniority from January 3, 1979 (36 years, 0 days) (retired)
105th	January 3, 1997 – January 3, 1999
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – January 3, 2003
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – January 3, 2007
110th	January 3, 2007 – January 3, 2009
111th	January 3, 2009 – January 3, 2011
112th	January 3, 2011 – January 3, 2013
113th	January 3, 2013 – January 3, 2015
114th	January 3, 2015 – January 3, 2017	Debbie Stabenow^[A] Seniority from January 3, 2001 (23 years, 262 days) (Incumbent)	Conyers (House) Seniority from January 3, 1965 (52 years, 336 days)	John Conyers^[AD] Seniority from January 3, 1965 (52 years, 336 days) (resigned)
115th	January 3, 2017 – December 5, 2017
115th	December 5, 2017 – January 3, 2019		Levin (House) Seniority from January 3, 1983 (36 years, 0 days)	Sander Levin Seniority from January 3, 1983 (36 years, 0 days) (retired)
116th	January 3, 2019 – January 3, 2021		Upton (House) Seniority from January 3, 1987 (36 years, 0 days)	Fred Upton Seniority from January 3, 1987 (36 years, 0 days) (retired)
117th	January 3, 2021 – January 3, 2023
118th	January 3, 2023 – present		Stabenow (House and Senate) Seniority from January 3, 1997 (27 years, 262 days)	Tim Walberg Seniority from January 3, 2011^[b] (13 years, 262 days) (Incumbent)
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean(s) (Combined seniority and tenure)	House dean(s) (Seniority and tenure) (Cause of departure)

Minnesota

Senior members of Minnesota's congressional delegation
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)
35th	May 11, 1858 – March 4, 1859	James Shields Seniority from May 11, 1858^[n] (296 days) (lost re-election)^[24]	Shields (Senate) Seniority from May 11, 1858^[o] (296 days)	James M. Cavanaugh^[T] Seniority from May 11, 1858^[p] (296 days) (lost re-election)^[25]
36th	March 4, 1859 – March 4, 1861	Henry M. Rice^[T] Seniority from May 11, 1858 (4 years, 296 days) (retired)	Rice (Senate) Seniority from May 11, 1858 (4 years, 296 days)	No clear dean^[l]^[q]
37th	March 4, 1861 – March 4, 1863			No clear dean^[l]^[q]
38th	March 4, 1863 – March 4, 1865	Morton S. Wilkinson Seniority from March 4, 1859 (5 years, 364 days) (lost re-election)^[26]	Co-deans: Wilkinson (Senate) Windom (House) Seniority from March 4, 1859 (5 years, 364 days)	William Windom Seniority from March 4, 1859 (9 years, 364 days) (retired)
39th	March 4, 1865 – March 4, 1867	Alexander Ramsey^[A] Seniority from March 4, 1863 (11 years, 364 days) (retired)	Windom (House) Seniority from March 4, 1859 (9 years, 364 days)
40th	March 4, 1867 – March 4, 1869
41st	March 4, 1869 – March 4, 1871		Ramsey (Senate) Seniority from March 4, 1863 (11 years, 364 days)	No clear dean^[l]^[r]
42nd	March 4, 1871 – March 4, 1873
43rd	March 4, 1873 – March 4, 1875
44th	March 4, 1875 – March 4, 1877	William Windom^[I]^[A] Seniority from March 4, 1871 (10 years, 3 days) (appointed Secretary of the Treasury)	Co-deans: Windom^[AE] (Senate) Dunnell (House) Seniority from March 4, 1871 (10 years, 3 days)	Mark H. Dunnell Seniority from March 4, 1871 (11 years, 364 days) (ran for Senate)
45th	March 4, 1877 – March 4, 1879
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 7, 1881
47th	March 7, 1881 – March 4, 1883	Samuel J. R. McMillan Seniority from March 4, 1875 (11 years, 364 days) (retired)	Dunnell (House) Seniority from March 4, 1871 (11 years, 364 days)
48th	March 4, 1883 – March 4, 1885		McMillan (Senate) Seniority from March 4, 1875 (11 years, 364 days)	William D. Washburn Seniority from March 4, 1879 (5 years, 364 days) (lost renomination)
49th	March 4, 1885 – March 4, 1887			Horace B. Strait^[C] Seniority from March 4, 1881 (5 years, 364 days) (retired)
50th	March 4, 1887 – March 4, 1889	Dwight M. Sabin Seniority from March 4, 1883 (5 years, 364 days) (lost renomination)	Co-deans: Sabin (Senate) Nelson (House) Seniority from March 4, 1883 (5 years, 364 days)	Knute Nelson Seniority from March 4, 1883 (5 years, 364 days) (retired)
51st	March 4, 1889 – March 4, 1891	Cushman K. Davis Seniority from March 4, 1887 (13 years, 268 days) (died)	Co-deans: C. K. Davis (Senate) Lind (House) Seniority from March 4, 1887 (5 years, 364 days)	John Lind Seniority from March 4, 1887 (5 years, 364 days) (retired)
52nd	March 4, 1891 – March 4, 1893
53rd	March 4, 1893 – March 4, 1895		C. K. Davis (Senate) Seniority from March 4, 1887 (13 years, 268 days)	Osee M. Hall Seniority from March 4, 1891 (3 years, 364 days) (lost re-election)^[27]
54th	March 4, 1895 – March 4, 1897			Loren Fletcher Seniority from March 4, 1893^[e] (9 years, 364 days) (lost re-election)^[28]
55th	March 4, 1897 – March 4, 1899
56th	March 4, 1899 – November 27, 1900
56th	November 27, 1900 – March 4, 1901	Knute Nelson^[A] Seniority from March 4, 1895 (28 years, 55 days) (died)	Fletcher (House) Seniority from March 4, 1893 (9 years, 364 days)
57th	March 4, 1901 – March 4, 1903
58th	March 4, 1903 – March 4, 1905		Co-deans: McCleary, Tawney (House) Seniority from March 4, 1893 (13 years, 364 days)	Co-deans: James McCleary, James A. Tawney Seniority from March 4, 1893 (13 years, 364 days) (McCleary lost re-election)^[29]
59th	March 4, 1905 – March 4, 1907
60th	March 4, 1907 – March 4, 1909		Tawney (House) Seniority from March 4, 1893 (17 years, 364 days)	James A. Tawney Seniority from March 4, 1893 (17 years, 364 days) (lost re-election)^[30]
61st	March 4, 1909 – March 4, 1911
62nd	March 4, 1911 – March 4, 1913		Nelson^[AE] (Senate) Seniority from March 4, 1895 (28 years, 55 days)	Frederick C. Stevens Seniority from March 4, 1897 (17 years, 364 days) (lost re-election)
63rd	March 4, 1913 – March 4, 1915
64th	March 4, 1915 – March 4, 1917			Charles R. Davis Seniority from March 4, 1903^[e] (21 years, 364 days) (lost renomination)
65th	March 4, 1917 – March 4, 1919
66th	March 4, 1919 – March 4, 1921
67th	March 4, 1921 – March 4, 1923
68th	March 4, 1923 – April 28, 1923
68th	April 28, 1923 – March 4, 1925	Henrik Shipstead^[AF] Seniority from March 4, 1923 (23 years, 305 days) (lost renomination)	C. R. Davis (House) Seniority from March 4, 1903 (21 years, 364 days)
69th	March 4, 1925 – March 4, 1927		Schall^[G] (House and Senate) Seniority from March 4, 1915 (20 years, 293 days)	Harold Knutson Seniority from March 4, 1917 (31 years, 305 days) (lost re-election)
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – March 4, 1931
72nd	March 4, 1931 – March 4, 1933
73rd	March 4, 1933 – January 3, 1935
74th	January 3, 1935 – December 22, 1935
74th	December 22, 1935 – January 3, 1937		Knutson (House) Seniority from March 4, 1917 (31 years, 305 days)
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – January 3, 1941
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945
79th	January 3, 1945 – January 3, 1947
80th	January 3, 1947 – January 3, 1949	Joseph H. Ball^[I] Seniority from January 3, 1943 (6 years, 0 days) (lost re-election)
81st	January 3, 1949 – January 3, 1951	Edward J. Thye Seniority from January 3, 1947 (12 years, 0 days) (lost re-election)	Andresen (House) Seniority from January 3, 1935 (23 years, 11 days)	August H. Andresen^[C] Seniority from January 3, 1935 (23 years, 11 days) (died)
82nd	January 3, 1951 – January 3, 1953
83rd	January 3, 1953 – January 3, 1955
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 14, 1958
85th	January 14, 1958 – January 3, 1959		Andersen (House) Seniority from January 3, 1939 (28 years, 0 days)	H. Carl Andersen Seniority from January 3, 1939 (28 years, 0 days) (lost renomination)
86th	January 3, 1959 – January 3, 1961	Hubert Humphrey Seniority from January 3, 1949 (15 years, 361 days) (elected Vice President)
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – December 29, 1964		Blatnik (House) Seniority from January 3, 1947 (27 years, 362 days)	John Blatnik Seniority from January 3, 1947 (27 years, 362 days) (resigned)
88th	December 29, 1964 – January 3, 1965	Eugene McCarthy^[A] Seniority from January 3, 1959 (12 years, 0 days) (retired)
89th	January 3, 1965 – January 3, 1967
90th	January 3, 1967 – January 3, 1969
91st	January 3, 1969 – January 3, 1971
92nd	January 3, 1971 – January 3, 1973	Walter Mondale Seniority from December 30, 1964^[f] (12 years, 0 days) (elected Vice President)
93rd	January 3, 1973 – December 31, 1974
93rd	December 31, 1974 – January 3, 1975		Quie (House) Seniority from February 8, 1958 (20 years, 329 days)	Al Quie Seniority from February 8, 1958^[d] (20 years, 329 days) (elected Minnesota governor)
94th	January 3, 1975 – December 30, 1976
94th	December 30, 1976 – January 3, 1977	Hubert Humphrey^[F]^[AG] Seniority from January 3, 1971 (7 years, 10 days) (died)
95th	January 3, 1977 – January 13, 1978
	January 13, 1978 – December 29, 1978	Wendell R. Anderson Seniority from December 30, 1976^[f] (1 year, 364 days) (resigned)
	December 29, 1978 – January 3, 1979	David Durenberger Seniority from November 8, 1978^[g] (16 years, 56 days) (retired)
96th	January 3, 1979 – January 3, 1981		Frenzel (House) Seniority from January 3, 1971 (20 years, 0 days)	Bill Frenzel Seniority from January 3, 1971 (20 years, 0 days) (retired)
97th	January 3, 1981 – January 3, 1983
98th	January 3, 1983 – January 3, 1985
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989
101st	January 3, 1989 – January 3, 1991
102nd	January 3, 1991 – January 3, 1993		Oberstar (House) Seniority from January 3, 1975 (36 years, 0 days)	Jim Oberstar Seniority from January 3, 1975 (36 years, 0 days) (lost re-election)
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997	Paul Wellstone Seniority from January 3, 1991 (11 years, 295 days) (died)
105th	January 3, 1997 – January 3, 1999
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – October 25, 2002
107th	October 25, 2002 – January 3, 2003	Mark Dayton Seniority from January 3, 2001 (6 years, 0 days) (retired)
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – January 3, 2007
110th	January 3, 2007 – January 3, 2009	Norm Coleman Seniority from January 3, 2003 (6 years, 0 days) (term expired)^[31]
111th	January 3, 2009 – January 3, 2011	Amy Klobuchar Seniority from January 3, 2007 (17 years, 262 days) (Incumbent)
112th	January 3, 2011 – January 3, 2013		Peterson (House) Seniority from January 3, 1991 (30 years, 0 days)	Collin Peterson Seniority from January 3, 1991 (30 years, 0 days) (lost re-election)
113th	January 3, 2013 – January 3, 2015
114th	January 3, 2015 – January 3, 2017
115th	January 3, 2017 – January 3, 2019
116th	January 3, 2019 – January 3, 2021
117th	January 3, 2021 – January 3, 2023		McCollum (House) Seniority from January 3, 2001 (23 years, 262 days)	Betty McCollum Seniority from January 3, 2001 (23 years, 262 days) (Incumbent)
118th	January 3, 2023 – present
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)

Mississippi

Senior members of Mississippi's congressional delegation
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean(s) (Combined seniority and tenure)	House dean(s) (Seniority and tenure) (Cause of departure)
15th	December 10, 1817 – March 4, 1819	Walter Leake Seniority from December 10, 1817^[s] (2 years, 157 days) (resigned)	Poindexter (House) Seniority from December 10, 1817^[t] (1 year, 83 days)	George Poindexter^[U]^[T] Seniority from December 10, 1817 (1 year, 83 days) (retired)
16th	March 4, 1819 – May 15, 1820		Leake (Senate) Seniority from December 10, 1817 (2 years, 157 days)	Christopher Rankin^[AH]^[U] Seniority from March 4, 1819 (7 years, 10 days) (died)
16th	May 15, 1820 – March 4, 1821	Thomas Hill Williams^[AH] Seniority from December 10, 1817 (11 years, 83 days) (retired)	T. Williams (Senate) Seniority from December 10, 1817 (11 years, 83 days)
17th	March 4, 1821 – March 4, 1823
18th	March 4, 1823 – March 4, 1825
19th	March 4, 1825 – March 14, 1826
	March 14, 1826 – July 10, 1826			Vacant
	July 10, 1826 – March 4, 1827			William Haile^[U] Seniority from July 10, 1826^[d]^[32] (2 years, 64 days) (resigned)
20th	March 4, 1827 – September 12, 1828
	September 12, 1828 – October 20, 1828			Vacant
	October 20, 1828 – March 4, 1829			Thomas Hinds^[U] Seniority from October 20, 1828^[d]^[33] (2 years, 134 days) (retired)
21st	March 4, 1829 – March 4, 1831	Powhatan Ellis^[I] Seniority from March 4, 1827 (5 years, 134 days) (appointed district court judge)	Ellis (Senate) Seniority from March 4, 1827 (5 years, 134 days)
22nd	March 4, 1831 – July 16, 1832			Franklin E. Plummer^[AI] Seniority from March 4, 1831 (3 years, 364 days) (ran for Senate)
22nd	July 16, 1832 – March 4, 1833	George Poindexter^[AJ]^[A] Seniority from October 15, 1830^[f] (4 years, 139 days) (lost re-election)^[34]	Poindexter (Senate) Seniority from October 15, 1830 (4 years, 139 days)
23rd	March 4, 1833 – March 4, 1835
24th	March 4, 1835 – July 31, 1836	John Black^[AK] Seniority from November 12, 1832^[f]^[u] (5 years, 71 days) (resigned)^[35]	Black (Senate) Seniority from November 12, 1832 (5 years, 71 days)	No clear dean^[l]^[v]
24th	July 31, 1836 – March 4, 1837			J. F. H. Claiborne Seniority from March 4, 1835 (1 year, 364 days) (re-elected late)
25th	March 4, 1837 – September 4, 1837			Vacant^[w]
	September 4, 1837 – January 22, 1838			No clear dean^[l]^[x]
	January 22, 1838 – February 5, 1838	Robert J. Walker Seniority from March 4, 1835 (10 years, 1 day) (appointed Secretary of the Treasury)	Walker (Senate) Seniority from March 4, 1835 (10 years, 1 day)	No clear dean^[l]^[x]
	February 5, 1838 – May 30, 1838			Vacant^[y]
	May 30, 1838 – March 4, 1839			No clear dean^[l]^[z]
26th	March 4, 1839 – March 4, 1841			No clear dean^[l]^[z]
27th	March 4, 1841 – March 4, 1843			Jacob Thompson Seniority from March 4, 1839 (11 years, 364 days) (lost re-election)
28th	March 4, 1843 – March 4, 1845
29th	March 4, 1845 – March 5, 1845
29th	March 5, 1845 – March 4, 1847	Jesse Speight^[A] Seniority from March 4, 1845 (2 years, 58 days) (died)	J. Thompson (House) Seniority from March 4, 1839 (11 years, 364 days)
30th	March 4, 1847 – May 1, 1847
30th	May 1, 1847 – March 4, 1849	Henry S. Foote Seniority from March 4, 1847 (4 years, 310 days) (elected Mississippi governor)
31st	March 4, 1849 – March 4, 1851
32nd	March 4, 1851 – January 8, 1852		Brown (House) Seniority from March 4, 1847^[b] (5 years, 364 days)	Albert G. Brown^[C] Seniority from March 4, 1847 (5 years, 364 days) (retired)
	January 8, 1852 – March 17, 1852	John J. McRae Seniority from December 1, 1851^[f] (107 days) (successor elected)^[36]
	March 17, 1852 – March 4, 1853	Walker Brooke Seniority from February 18, 1852^[a] (1 year, 13 days) (retired)^[37]
33rd	March 4, 1853 – March 4, 1855	Stephen Adams^[A] Seniority from February 19, 1852^[a]^[38] (5 years, 12 days) (retired)	Adams (Senate) Seniority from February 19, 1852 (5 years, 12 days)	No clear dean^[l]
34th	March 4, 1855 – March 4, 1857			Co-deans: William Barksdale, Daniel B. Wright Seniority from March 4, 1853 (3 years, 364 days) (Wright retired)
35th	March 4, 1857 – March 4, 1859	Albert G. Brown^[A] Seniority from January 7, 1854^[c] (7 years, 5 days) (withdrew)^[39]	Barksdale (House) Seniority from March 4, 1853 (7 years, 314 days)	William Barksdale Seniority from March 4, 1853 (7 years, 314 days) (withdrew)^[40]
36th	March 4, 1859 – January 12, 1861
	January 12, 1861 – January 21, 1861	Jefferson Davis^[I]^[A] Seniority from March 4, 1857 (3 years, 323 days) (withdrew)^[41]	Davis (Senate) Seniority from March 4, 1857 (3 years, 323 days)	Vacant (Civil War and Reconstruction)
	January 21, 1861 – March 4, 1861	Vacant (Civil War and Reconstruction)	None^[aa]
37th	March 4, 1861 – March 4, 1863
38th	March 4, 1863 – March 4, 1865
39th	March 4, 1865 – March 4, 1867
40th	March 4, 1867 – March 4, 1869
41st	March 4, 1869 – February 23, 1870
	February 23, 1870 – February 25, 1870	Adelbert Ames Seniority from February 23, 1870^[ab] (3 years, 321 days) (elected Mississippi governor)		No clear dean^[ac]
	February 25, 1870 – March 4, 1871		Co-deans: Ames (Senate) Barry^[ad] (House) Seniority from February 23, 1870 (3 years, 8 days)
42nd	March 4, 1871 – March 4, 1873
43rd	March 4, 1873 – January 10, 1874		Co-deans: Ames (Senate) Barry, McKee (House) Seniority from February 23, 1870 (3 years, 321 days)	Co-deans: Henry W. Barry, George C. McKee Seniority from February 23, 1870^[43] (5 years, 8 days) (both retired)
43rd	January 10, 1874 – March 4, 1875	James L. Alcorn Seniority from December 1, 1871^[h] (5 years, 92 days) (retired)	Co-deans: Barry, McKee (House) Seniority from February 23, 1870 (5 years, 8 days)
44th	March 4, 1875 – March 4, 1877		Alcorn (Senate) Seniority from December 1, 1871 (5 years, 92 days)	Lucius Q. C. Lamar^[C] Seniority from March 4, 1873^[b] (3 years, 364 days) (elected to Senate)
45th	March 4, 1877 – March 4, 1879	Blanche Bruce Seniority from March 4, 1875 (5 years, 364 days) (retired)	Lamar (House and Senate) Seniority from March 4, 1873 (12 years, 2 days)	Otho R. Singleton^[C] Seniority from March 4, 1875^[b] (11 years, 364 days) (retired)
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 4, 1883	Lucius Q. C. Lamar^[A] Seniority from March 4, 1877 (8 years, 2 days) (appointed Secretary of the Interior)
48th	March 4, 1883 – March 4, 1885
49th	March 4, 1885 – March 6, 1885
49th	March 6, 1885 – March 4, 1887	James Z. George Seniority from March 4, 1881 (16 years, 163 days) (died)	Singleton (House) Seniority from March 4, 1875 (11 years, 364 days)
50th	March 4, 1887 – March 4, 1889		George (Senate) Seniority from March 4, 1881 (16 years, 163 days)	John M. Allen Seniority from March 4, 1885^[e] (5 years, 364 days) (co-dean after Morgan's retirement)
51st	March 4, 1889 – March 4, 1891
52nd	March 4, 1891 – March 4, 1893			Co-deans: John M. Allen, Thomas C. Catchings Seniority from March 4, 1885 (15 years, 364 days) (both retired)
53rd	March 4, 1893 – March 4, 1895
54th	March 4, 1895 – March 4, 1897
55th	March 4, 1897 – August 14, 1897
	August 14, 1897 – April 21, 1898	Edward C. Walthall^[I] Seniority from March 4, 1895 (3 years, 48 days) (died)	Co-deans: Allen, Catchings (House) Seniority from March 4, 1885 (15 years, 364 days)
	April 21, 1898 – March 4, 1899	Hernando Money^[AL]^[A] Seniority from October 8, 1897^[f] (13 years, 146 days) (retired)
56th	March 4, 1899 – March 4, 1901
57th	March 4, 1901 – March 4, 1903		J. Williams (House) Seniority from March 4, 1893 (15 years, 364 days)	John Sharp Williams^[AM] Seniority from March 4, 1893 (15 years, 364 days) (retired)^[44]
58th	March 4, 1903 – March 4, 1905
59th	March 4, 1905 – March 4, 1907
60th	March 4, 1907 – March 4, 1909
61st	March 4, 1909 – March 4, 1911		Money (Senate) Seniority from October 8, 1897 (13 years, 146 days)	Thomas Spight Seniority from July 5, 1898^[d] (12 years, 241 days) (lost renomination)^[45]
62nd	March 4, 1911 – March 4, 1913	LeRoy Percy Seniority from February 23, 1910^[a] (3 years, 8 days) (lost nomination to full term)^[46]	Candler (House) Seniority from March 4, 1901 (19 years, 364 days)	Ezekiel S. Candler Jr. Seniority from March 4, 1901 (19 years, 364 days) (lost renomination)^[47]
63rd	March 4, 1913 – March 4, 1915	John Sharp Williams^[A] Seniority from March 4, 1911 (11 years, 364 days) (retired)
64th	March 4, 1915 – March 4, 1917
65th	March 4, 1917 – March 4, 1919
66th	March 4, 1919 – March 4, 1921
67th	March 4, 1921 – March 4, 1923		Humphreys (House) Seniority from March 4, 1903 (20 years, 226 days)	Benjamin G. Humphreys II Seniority from March 4, 1903 (20 years, 226 days) (died)
68th	March 4, 1923 – October 16, 1923	Pat Harrison^[AN]^[A] Seniority from March 4, 1919 (22 years, 110 days) (died)
68th	October 16, 1923 – March 4, 1925		Collier (House) Seniority from March 4, 1909 (23 years, 364 days)	James W. Collier Seniority from March 4, 1909 (23 years, 364 days) (retired)
69th	March 4, 1925 – March 4, 1927
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – March 4, 1931
72nd	March 4, 1931 – March 4, 1933
73rd	March 4, 1933 – January 3, 1935		Harrison (House and Senate) Seniority from March 4, 1911 (30 years, 110 days)	Co-deans: Ross A. Collins, John E. Rankin Seniority from March 4, 1921 (13 years, 305 days) (Collins ran for Senate)
74th	January 3, 1935 – January 3, 1937			John E. Rankin Seniority from March 4, 1921 (31 years, 305 days) (lost renomination)^[48]
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – January 3, 1941
77th	January 3, 1941 – June 22, 1941
77th	June 22, 1941 – January 3, 1943	Theodore G. Bilbo Seniority from January 3, 1935 (12 years, 230 days) (died)	Rankin (House) Seniority from March 4, 1921 (31 years, 305 days)
78th	January 3, 1943 – January 3, 1945
79th	January 3, 1945 – January 3, 1947
80th	January 3, 1947 – August 21, 1947
80th	August 21, 1947 – January 3, 1949	James Eastland^[AO]^[I] Seniority from January 3, 1943 (35 years, 358 days) (resigned)^[49]
81st	January 3, 1949 – January 3, 1951
82nd	January 3, 1951 – January 3, 1953
83rd	January 3, 1953 – January 3, 1955		Colmer (House) Seniority from March 4, 1933 (39 years, 305 days)	William M. Colmer Seniority from March 4, 1933 (39 years, 305 days) (retired)
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 3, 1959
86th	January 3, 1959 – January 3, 1961
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – January 3, 1965
89th	January 3, 1965 – January 3, 1967
90th	January 3, 1967 – January 3, 1969
91st	January 3, 1969 – January 3, 1971
92nd	January 3, 1971 – January 3, 1973
93rd	January 3, 1973 – January 3, 1975		Whitten (House) Seniority from November 4, 1941 (53 years, 60 days)	Jamie Whitten^[AP] Seniority from November 4, 1941^[d] (53 years, 60 days) (retired)
94th	January 3, 1975 – January 3, 1977
95th	January 3, 1977 – December 27, 1978
95th	December 27, 1978 – January 3, 1979	John C. Stennis^[AQ] Seniority from November 5, 1947^[g] (41 years, 59 days) (retired)
96th	January 3, 1979 – January 3, 1981
97th	January 3, 1981 – January 3, 1983
98th	January 3, 1983 – January 3, 1985
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989
101st	January 3, 1989 – January 3, 1991	Thad Cochran^[A] Seniority from December 27, 1978^[f] (39 years, 95 days) (resigned)^[50]
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997		Montgomery (House) Seniority from January 3, 1967 (30 years, 0 days)	Sonny Montgomery Seniority from January 3, 1967 (30 years, 0 days) (retired)
105th	January 3, 1997 – January 3, 1999		Co-deans: Cochran (House and Senate) Lott^[G] (House and Senate) Seniority from January 3, 1973 (34 years, 349 days)	Michael Parker Seniority from January 3, 1989 (10 years, 0 days) (ran for Mississippi governor)
106th	January 3, 1999 – January 3, 2001			Gene Taylor Seniority from October 17, 1989^[d] (21 years, 78 days) (lost re-election)
107th	January 3, 2001 – January 3, 2003
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – January 3, 2007
110th	January 3, 2007 – December 18, 2007
110th	December 18, 2007 – January 3, 2009		Cochran (House and Senate) Seniority from January 3, 1973 (45 years, 88 days)
111th	January 3, 2009 – January 3, 2011
112th	January 3, 2011 – January 3, 2013			Bennie Thompson Seniority from April 13, 1993^[d] (31 years, 161 days) (Incumbent)
113th	January 3, 2013 – January 3, 2015
114th	January 3, 2015 – January 3, 2017
115th	January 3, 2017 – April 1, 2018
115th	April 1, 2018 – January 3, 2019	Roger Wicker^[A] Seniority from December 31, 2007^[f] (16 years, 265 days) (Incumbent)	B. Thompson (House) Seniority from April 13, 1993 (31 years, 161 days)
116th	January 3, 2019 – January 3, 2021
117th	January 3, 2021 – January 3, 2023
118th	January 3, 2023 – present
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean(s) (Combined seniority and tenure)	House dean(s) (Seniority and tenure) (Cause of departure)

Missouri

Senior members of Missouri's congressional delegation (1877–present)
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)
45th	March 4, 1877 – September 20, 1877	Lewis V. Bogy Seniority from March 4, 1873 (4 years, 200 days) (died)	Co-deans: Bogy (Senate) Bland (House) Seniority from March 4, 1873 (4 years, 200 days)	Richard P. Bland Seniority from March 4, 1873^[e] (9 years, 364 days) (co-dean after Clark lost renomination)
45th	September 20, 1877 – March 4, 1879	Francis Cockrell Seniority from March 4, 1875 (29 years, 364 days) (lost re-election)	Bland (House) Seniority from March 4, 1873 (9 years, 364 days)
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 4, 1883
48th	March 4, 1883 – March 4, 1885		Co-deans: Bland, Buckner (House) Seniority from March 4, 1873 (11 years, 364 days)	Co-deans: Richard P. Bland, Aylett H. Buckner Seniority from March 4, 1873 (11 years, 364 days) (Buckner retired)
49th	March 4, 1885 – March 4, 1887		Bland (House) Seniority from March 4, 1873 (21 years, 364 days)	Richard P. Bland^[AR] Seniority from March 4, 1873 (21 years, 364 days) (lost re-election)
50th	March 4, 1887 – March 4, 1889
51st	March 4, 1889 – March 4, 1891
52nd	March 4, 1891 – March 4, 1893
53rd	March 4, 1893 – March 4, 1895
54th	March 4, 1895 – March 4, 1897		Cockrell (Senate) Seniority from March 4, 1875 (29 years, 364 days)	Alexander M. Dockery Seniority from March 4, 1883 (15 years, 364 days) (ran for Missouri governor)
55th	March 4, 1897 – March 4, 1899
56th	March 4, 1899 – March 4, 1901			David A. De Armond Seniority from March 4, 1891 (18 years, 264 days) (died)
57th	March 4, 1901 – March 4, 1903
58th	March 4, 1903 – March 4, 1905
59th	March 4, 1905 – March 4, 1907	William J. Stone^[A] Seniority from March 4, 1903 (15 years, 41 days) (died)	De Armond (House) Seniority from March 4, 1891 (18 years, 264 days)
60th	March 4, 1907 – March 4, 1909
61st	March 4, 1909 – November 23, 1909
61st	November 23, 1909 – March 4, 1911		Bartholdt (House) Seniority from March 4, 1893 (21 years, 364 days)	Richard Bartholdt Seniority from March 4, 1893 (21 years, 364 days) (retired)
62nd	March 4, 1911 – March 4, 1913
63rd	March 4, 1913 – March 4, 1915
64th	March 4, 1915 – March 4, 1917		Clark (House) Seniority from March 4, 1897 (23 years, 363 days)	Champ Clark^[AS]^[C] Seniority from March 4, 1897 (23 years, 363 days) (died)
65th	March 4, 1917 – April 14, 1918
65th	April 14, 1918 – March 4, 1919	James A. Reed Seniority from March 4, 1911 (17 years, 364 days) (retired)
66th	March 4, 1919 – March 2, 1921
66th	March 2, 1921 – March 4, 1921		Rucker (House) Seniority from March 4, 1899 (23 years, 364 days)	William W. Rucker Seniority from March 4, 1899 (23 years, 364 days) (lost re-election)^[51]
67th	March 4, 1921 – March 4, 1923
68th	March 4, 1923 – March 4, 1925		Reed (Senate) Seniority from March 4, 1911 (17 years, 364 days)	Leonidas C. Dyer^[C] Seniority from March 4, 1915 (17 years, 364 days) (lost re-election)
69th	March 4, 1925 – March 4, 1927
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – March 4, 1931	Harry B. Hawes^[A] Seniority from December 6, 1926^[g] (6 years, 59 days) (resigned)	Dyer (House) Seniority from March 4, 1915 (17 years, 364 days)
72nd	March 4, 1931 – February 3, 1933
72nd	February 3, 1933 – March 4, 1933	Roscoe C. Patterson^[A] Seniority from March 4, 1929 (5 years, 305 days) (lost re-election)
73rd	March 4, 1933 – January 3, 1935		Romjue (House) Seniority from March 4, 1923^[b] (19 years, 305 days)	Milton A. Romjue^[C] Seniority from March 4, 1923^[ae]^[b] (19 years, 305 days) (lost re-election)
74th	January 3, 1935 – January 3, 1937	Joel B. Clark Seniority from February 3, 1933^[f] (11 years, 335 days) (lost renomination)
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – January 3, 1941
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945		Cannon (House) Seniority from March 4, 1923 (41 years, 69 days)	Clarence Cannon Seniority from March 4, 1923 (41 years, 69 days) (died)
79th	January 3, 1945 – January 17, 1945	Harry S. Truman Seniority from January 3, 1935 (10 years, 14 days) (elected Vice President)
79th	January 17, 1945 – January 3, 1947	Forrest C. Donnell Seniority from January 3, 1945 (6 years, 0 days) (lost re-election)
80th	January 3, 1947 – January 3, 1949
81st	January 3, 1949 – January 3, 1951
82nd	January 3, 1951 – January 3, 1953	James P. Kem Seniority from January 3, 1947 (6 years, 0 days) (lost re-election)
83rd	January 3, 1953 – January 3, 1955	Thomas C. Hennings^[A] Seniority from January 3, 1951 (9 years, 254 days) (died)
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 3, 1959
86th	January 3, 1959 – September 13, 1960
86th	September 13, 1960 – January 3, 1961	Stuart Symington Seniority from January 3, 1953 (23 years, 359 days) (resigned)
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – May 12, 1964
88th	May 12, 1964 – January 3, 1965		Karsten (House) Seniority from January 3, 1947 (22 years, 0 days)	Frank M. Karsten Seniority from January 3, 1947 (22 years, 0 days) (retired)
89th	January 3, 1965 – January 3, 1967
90th	January 3, 1967 – January 3, 1969
91st	January 3, 1969 – January 3, 1971		Bolling (House) Seniority from January 3, 1949 (34 years, 0 days)	Richard W. Bolling Seniority from January 3, 1949 (34 years, 0 days) (retired)
92nd	January 3, 1971 – January 3, 1973
93rd	January 3, 1973 – January 3, 1975
94th	January 3, 1975 – December 27, 1976
94th	December 27, 1976 – January 3, 1977	Thomas Eagleton Seniority from December 28, 1968^[f] (18 years, 6 days) (retired)
95th	January 3, 1977 – January 3, 1979
96th	January 3, 1979 – January 3, 1981
97th	January 3, 1981 – January 3, 1983
98th	January 3, 1983 – January 3, 1985		Eagleton (Senate) Seniority from December 28, 1968 (18 years, 6 days)	Bill Clay Seniority from January 3, 1969 (32 years, 0 days) (retired)
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989	John Danforth Seniority from December 27, 1976^[f] (18 years, 7 days) (retired)	Clay (House) Seniority from January 3, 1969 (32 years, 0 days)
101st	January 3, 1989 – January 3, 1991
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997	Kit Bond Seniority from January 3, 1987 (24 years, 0 days) (retired)
105th	January 3, 1997 – January 3, 1999
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – January 3, 2003		Co-deans: Gephardt, Skelton (House) Seniority from January 3, 1977 (28 years, 0 days)	Co-deans: Dick Gephardt,^[AT] Ike Skelton Seniority from January 3, 1977 (28 years, 0 days) (Gephardt retired)^[52]
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – January 3, 2007		Skelton (House) Seniority from January 3, 1977 (34 years, 0 days)	Ike Skelton Seniority from January 3, 1977 (34 years, 0 days) (lost re-election)
110th	January 3, 2007 – January 3, 2009
111th	January 3, 2009 – January 3, 2011
112th	January 3, 2011 – January 3, 2013	Claire McCaskill Seniority from January 3, 2007 (12 years, 0 days) (lost re-election)	Emerson (House) Seniority from November 5, 1996 (16 years, 78 days)	Jo Ann Emerson Seniority from November 5, 1996^[d] (16 years, 78 days) (resigned)
113th	January 3, 2013 – January 22, 2013
113th	January 22, 2013 – January 3, 2015		Blunt (House and Senate) Seniority from January 3, 1997 (26 years, 0 days)	Co-deans: Lacy Clay (D), Sam Graves (R) Seniority from January 3, 2001 (20 years, 0 days) (Clay lost renomination)
114th	January 3, 2015 – January 3, 2017
115th	January 3, 2017 – January 3, 2019
116th	January 3, 2019 – January 3, 2021	Roy Blunt^[A] Seniority from January 3, 2011 (12 years, 0 days) (retired)
117th	January 3, 2021 – January 3, 2023			Sam Graves Seniority from January 3, 2001 (23 years, 262 days) (Incumbent)
118th	January 3, 2023 – present	Josh Hawley Seniority from January 3, 2019 (5 years, 262 days) (Incumbent)	Graves (House) Seniority from January 3, 2001 (23 years, 262 days)
Congress	Dates	Senior senator (Seniority and tenure) (Cause of departure)	Delegation dean (Combined seniority and tenure)	House dean (Seniority and tenure) (Cause of departure)

References

^ ^a ^b ^c ^d ^e "Chapter 7 § 2. Seniority and Derivative Rights". Deschler's Precedents, Volume 2 (PDF). U.S. Government Publishing Office. January 1, 1994. p. 670. Retrieved November 5, 2023.
^ "ROCKWELL, Julius (1805 – 1888)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.
^ "MANN, Horace (1796 – 1859)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.
^ "DE WITT, Alexander (1798 – 1879)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.
^ "RICE, William Whitney (1826 – 1896)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.
^ "LYON, Lucius (1800 – 1851)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "CASS, Lewis (1782 – 1866)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "MCCLELLAND, Robert (1807 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "BINGHAM, Kinsley Scott (1808 – 1861)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "HOWARD, William Alanson (1813 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "WALDRON, Henry (1819 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "BEAMAN, Fernando Cortez (1814 – 1882)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "BLAIR, Austin (1818 – 1894)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ ^a ^b "CONGER, Omar Dwight (1818 – 1898)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "HORR, Roswell Gilbert (1830 – 1896)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "PALMER, Thomas Witherell (1830 – 1913)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "CUTCHEON, Byron M. (1836 – 1908)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "CORLISS, John Blaisdell (1851 – 1929)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.
^ "BURROWS, Julius Caesar (1837 – 1915)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "BISHOP, Roswell Peter (1843 – 1920)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.
^ "SMITH, Samuel William (1852 – 1931)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.
^ "SMITH, William Alden (1859 – 1932)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.
^ "HAMILTON, Edward La Rue (1857 – 1923)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.
^ "SHIELDS, James (1806 – 1879)". Biographical Directory of the United States Congress. Retrieved June 23, 2024.
^ "CAVANAUGH, James Michael (1823 – 1879)". Biographical Directory of the United States Congress. Retrieved September 15, 2024.
^ "WILKINSON, Morton Smith (1819 – 1894)". Biographical Directory of the United States Congress. Retrieved June 23, 2024.
^ "HALL, Osee Matson (1847 – 1914)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.
^ "FLETCHER, Loren (1833 – 1919)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.
^ "MCCLEARY, James Thompson (1853 – 1924)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.
^ "TAWNEY, James Albertus (1855 – 1919)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.
^ Walsh, Paul (January 20, 2009). "Term expired, Minnesota-based Coleman wishes Obama well". Star Tribune. Retrieved June 24, 2024.
^ "HAILE, William (ca. 1797 – 1837)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.
^ "HINDS, Thomas (1780 – 1840)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.
^ "POINDEXTER, George (ca. 1779 – 1853)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "BLACK, John (1800 – 1854)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "MCRAE, John Jones (1815 – 1868)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "BROOKE, Walker (1813 – 1869)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "ADAMS, Stephen (1807 – 1857)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "BROWN, Albert Gallatin (1813 – 1880)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "BARKSDALE, William (1821 – 1863)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.
^ "DAVIS, Jefferson (1808 – 1889)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "REVELS, Hiram Rhodes (1827 – 1901)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.
^ "BARRY, Henry W. (ca. 1840 – 1875)". Biographical Directory of the United States Congress. Retrieved November 13, 2023.
^ "WILLIAMS, John Sharp (1854 – 1932)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.
^ "SPIGHT, Thomas (1841 – 1924)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.
^ "PERCY, Le Roy (1860 – 1929)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ "CANDLER, Ezekiel Samuel, Jr. (1862 – 1944)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.
^ "RANKIN, John Elliott (1882 – 1960)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.
^ "EASTLAND, James Oliver (1904 – 1986)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.
^ Everett, Burgess (March 5, 2018). "Cochran resigns effective April 1". Politico. Retrieved September 14, 2024.
^ "RUCKER, William Waller (1855 – 1936)". Biographical Directory of the United States Congress. Retrieved March 30, 2024.
^ "Honorable Richard Gephardt". Gephardt Group. Retrieved September 6, 2024.

Footnotes (positional)

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al Senator who previously served in the House of Representatives
^ Anti-Jacksonian from 1829 to 1835; Anti-Masonic from 1835 to 1837
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Previously served non-consecutive term(s) in the House
^ National Republican from 1835 to 1837
^ Dean of the House from 1844 to 1848
^ ^a ^b ^c ^d Second time; previously served non-consecutive term(s) in the Senate
^ ^a ^b ^c ^d as junior senator
^ Speaker of the House from 1847 to 1849
^ ^a ^b ^c ^d ^e ^f ^g Previously served non-consecutive term(s) in the Senate
^ Dean of the Senate from 1869 to 1874
^ Free Soiler from 1853 to 1857; Republican from 1857 to 1873; Liberal Republican from 1873 to 1874
^ Speaker of the House from 1856 to 1857
^ Dean of the House from 1869 to 1875
^ Second time; previously served non-consecutive term(s) in the House
^
Various positions:
- President pro tempore (May 25 – May 30, 1912)
- Senate Republican Leader (de facto) (1918–1924)
- Dean of the Senate (1918–1924)
^
Various positions:
- Speaker of the House (1919–1925, interrupted from December 3–5, 1923)
- Dean of the House (1919–1925)
- House Republican Leader (1919–1925)
^ House Republican Leader from 1939 to 1959; Speaker of the House from 1947 to 1949, 1953 to 1955
^ Speaker of the House and House Democratic Leader from 1962 to 1971
^ Speaker of the House and House Democratic Leader from 1977 to 1987
^ ^a ^b ^c ^d ^e Former non-voting delegate to the House of Representatives
^ ^a ^b ^c ^d ^e ^f Sole representative (at-large district)
^ Representative who previously served as a senator
^ President pro tempore from December 4 to December 5, 1854
^ President pro tempore from June 9 to June 10, 1856
^ Dean of the Senate from 1874 to 1875
^ President pro tempore from 1875 to 1879
^ President pro tempore from 1947 to 1949
^ House Republican Leader from 1965 to 1973
^ Dean of the House from 1995 to 2015
^ Dean of the House from 2015 to 2017
^ ^a ^b Second time
^ Elected as Farmer-Labor until 1941
^ Former Vice President (ex officio President of the Senate)
^ ^a ^b Elected as Democratic-Republican until 1825
^ Sole representative (at-large district) until reapportionment in 1832–33 House elections
^ President pro tempore from June to November 1834
^ Elected as National Republican until 1837
^ Senate Democratic Leader from 1909 to 1911
^ House Democratic Leader from 1903 to 1909
^ President pro tempore from January to June 1941
^
Various positions:
- President pro tempore (1972–1978)
- Dean of the Senate (1975–1978, alongside John L. McClellan until 1977)
^ Dean of the House from 1979 to 1995
^ Dean of the Senate from 1981 to 1989; President pro tempore from 1987 to 1989
^ Dean of the House from 1890 to 1895
^ House Democratic Leader from 1909 to 1921; Speaker of the House from 1911 to 1919
^ House Democratic Leader from 1995 to 2003

Footnotes (seniority)

^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Senator elected by state legislature intra-term prior to ratification of Seventeenth Amendment; seniority calculated from election date (if different from date the seat was filled)
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Shares seniority date with other officeholder(s); credited as sole dean by past non-consecutive terms in Congress
^ ^a ^b ^c ^d Elected late
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p Representative elected to fill vacancy; seniority calculated from date of special election (if different from date the seat was filled)^[1] Cite error: The named reference "housevacancy" was defined multiple times with different content (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Shares seniority date with more than two other Representatives (thus unable to count as co-deans); credited as sole dean due to surname coming first alphabetically
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q Senator appointed to fill intra-term vacancy; seniority calculated from date of appointment
^ ^a ^b ^c ^d ^e ^f ^g Senator elected to fill intra-term vacancy after ratification of the Seventeenth Amendment; seniority calculated from date the individual assumed office
^ ^a ^b Seated late by virtue of holding other political, governmental, or judicial office
^ Seniority over John Norvell due to tenure as delegate to the House of Representatives from Michigan Territory
^ Seniority over John Norvell and Isaac E. Crary due to tenure as delegate to the House of Representatives from Michigan Territory
^ John Norvell and Isaac E. Crary share a seniority date of January 26, 1837; Norvell's tenure as a shadow senator from Michigan Territory did not count as congressional service.
^ ^a ^b ^c ^d ^e ^f ^g Preceding elections involved turnover of all sitting incumbents; incoming officeholders share a seniority date with no distinguishing aspects
^ William A. Howard shared seniority with George Washington Peck (until March 4, 1857), David S. Walbridge, and Henry Waldron (until March 4, 1859)
^ Seniority over Henry M. Rice due to past service as a senator from Illinois
^ Shields had seniority over James M. Cavanaugh due to his service as a senator from Illinois from 1849 to 1855. Cavanaugh served as a non-voting delegate to the House of Representatives from Montana, which is inferior in seniority to Shields's service.
^ Seniority over William Wallace Phelps due to past service as delegate to the House of Representatives from Montana Territory
^ William Windom shared seniority with Cyrus Aldrich until March 4, 1863
^ Morton S. Wilkinson and Eugene M. Wilson shared seniority until March 3, 1871; Mark H. Dunnell shared seniority with John T. Averill until March 4, 1875
^ Seniority over Thomas Hill Williams due to surname coming first alphabetically
^ Seniority over Walter Leake and Thomas Hill Williams due to tenure as delegate to the House of Representatives from Mississippi Territory
^ De jure; break in term from March 4 to November 22, 1833 due to state legislature's failure to elect
^ Mississippi's at-large congressional district gained second seat in 1833; J. F. H. Claiborne shared seniority with David C. Dickson until July 31, 1836
^ Elections contested; Claiborne and Samuel J. Gholson not seated until September 4, 1837
^ Claiborne shared seniority with Gholson until seats declared vacant on February 5, 1838
^ Elections contested; Thomas J. Word and Seargent Smith Prentiss not seated until May 30, 1838
^ Word and Prentiss shared seniority until retiring on March 3, 1839; Albert G. Brown and Jacob Thompson shared seniority until Brown's retirement on March 3, 1841
^ Mississippi's congressional delegation was readmitted and sworn in on February 23, 1870; all had equal seniority until Hiram R. Revels was sworn in as a senator on February 25.
^ Seniority over Hiram R. Revels; Revels was sworn in on February 25 after the Senate resolved a challenge to his credentials^[42]
^ All newly-seated post-Civil War officeholders share seniority date of February 23, 1870
^ Seniority only in relation to Adelbert Ames; no House dean until 1873
^ Served more prior non-consecutive terms in total (two) than Jacob L. Milligan (one partial) during the 73rd Congress

Bibliography

Biographical Directory of the United States Congress (1774 – 2005) (PDF), Washington, D.C.: U.S. Government Printing Office, 2005, retrieved November 12, 2023

[deschlersseniority-10] "Chapter 7 § 2. Seniority and Derivative Rights". Deschler's Precedents, Volume 2 (PDF). U.S. Government Publishing Office. January 1, 1994. p. 670. Retrieved November 5, 2023.

[15] "ROCKWELL, Julius (1805 – 1888)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.

[16] "MANN, Horace (1796 – 1859)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.

[21] "DE WITT, Alexander (1798 – 1879)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.

[24] "RICE, William Whitney (1826 – 1896)". Biographical Directory of the United States Congress. Retrieved March 5, 2024.

[39] "LYON, Lucius (1800 – 1851)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[cass-40] "CASS, Lewis (1782 – 1866)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[41] "MCCLELLAND, Robert (1807 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[42] "BINGHAM, Kinsley Scott (1808 – 1861)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[47] "HOWARD, William Alanson (1813 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[49] "WALDRON, Henry (1819 – 1880)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[50] "BEAMAN, Fernando Cortez (1814 – 1882)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[51] "BLAIR, Austin (1818 – 1894)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[Conger-52] "CONGER, Omar Dwight (1818 – 1898)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[54] "HORR, Roswell Gilbert (1830 – 1896)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[55] "PALMER, Thomas Witherell (1830 – 1913)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[56] "CUTCHEON, Byron M. (1836 – 1908)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[57] "CORLISS, John Blaisdell (1851 – 1929)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.

[58] "BURROWS, Julius Caesar (1837 – 1915)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[59] "BISHOP, Roswell Peter (1843 – 1920)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.

[60] "SMITH, Samuel William (1852 – 1931)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.

[61] "SMITH, William Alden (1859 – 1932)". Biographical Directory of the United States Congress. Retrieved September 7, 2024.

[62] "HAMILTON, Edward La Rue (1857 – 1923)". Biographical Directory of the United States Congress. Retrieved September 8, 2024.

[68] "SHIELDS, James (1806 – 1879)". Biographical Directory of the United States Congress. Retrieved June 23, 2024.

[71] "CAVANAUGH, James Michael (1823 – 1879)". Biographical Directory of the United States Congress. Retrieved September 15, 2024.

[73] "WILKINSON, Morton Smith (1819 – 1894)". Biographical Directory of the United States Congress. Retrieved June 23, 2024.

[76] "HALL, Osee Matson (1847 – 1914)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.

[77] "FLETCHER, Loren (1833 – 1919)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.

[78] "MCCLEARY, James Thompson (1853 – 1924)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.

[79] "TAWNEY, James Albertus (1855 – 1919)". Biographical Directory of the United States Congress. Retrieved June 24, 2024.

[82] Walsh, Paul (January 20, 2009). "Term expired, Minnesota-based Coleman wishes Obama well". Star Tribune. Retrieved June 24, 2024.

[86] "HAILE, William (ca. 1797 – 1837)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.

[87] "HINDS, Thomas (1780 – 1840)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.

[poindexter-90] "POINDEXTER, George (ca. 1779 – 1853)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[93] "BLACK, John (1800 – 1854)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[99] "MCRAE, John Jones (1815 – 1868)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[100] "BROOKE, Walker (1813 – 1869)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[101] "ADAMS, Stephen (1807 – 1857)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[102] "BROWN, Albert Gallatin (1813 – 1880)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[103] "BARKSDALE, William (1821 – 1863)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.

[104] "DAVIS, Jefferson (1808 – 1889)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[106] "REVELS, Hiram Rhodes (1827 – 1901)". Biographical Directory of the United States Congress. Retrieved November 12, 2023.

[110] "BARRY, Henry W. (ca. 1840 – 1875)". Biographical Directory of the United States Congress. Retrieved November 13, 2023.

[113] "WILLIAMS, John Sharp (1854 – 1932)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.

[114] "SPIGHT, Thomas (1841 – 1924)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.

[115] "PERCY, Le Roy (1860 – 1929)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[116] "CANDLER, Ezekiel Samuel, Jr. (1862 – 1944)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.

[118] "RANKIN, John Elliott (1882 – 1960)". Biographical Directory of the United States Congress. Retrieved September 16, 2024.

[120] "EASTLAND, James Oliver (1904 – 1986)". Biographical Directory of the United States Congress. Retrieved September 14, 2024.

[123] Everett, Burgess (March 5, 2018). "Cochran resigns effective April 1". Politico. Retrieved September 14, 2024.

[126] "RUCKER, William Waller (1855 – 1936)". Biographical Directory of the United States Congress. Retrieved March 30, 2024.

[129] "Honorable Richard Gephardt". Gephardt Group. Retrieved September 6, 2024.

[formerhouse-1] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w ^x ^y ^z ^aa ^ab ^ac ^ad ^ae ^af ^ag ^ah ^ai ^aj ^ak ^al Senator who previously served in the House of Representatives

[3] Anti-Jacksonian from 1829 to 1835; Anti-Masonic from 1835 to 1837

[housenonconsecutive-4] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m Previously served non-consecutive term(s) in the House

[6] National Republican from 1835 to 1837

[8] Dean of the House from 1844 to 1848

[secondsenate-9] Second time; previously served non-consecutive term(s) in the Senate

[jr-12] s junior senator

[13] Speaker of the House from 1847 to 1849

[senatenonconsecutive-14] ^ ^a ^b ^c ^d ^e ^f ^g Previously served non-consecutive term(s) in the Senate

[17] Dean of the Senate from 1869 to 1874

[18] Free Soiler from 1853 to 1857; Republican from 1857 to 1873; Liberal Republican from 1873 to 1874

[20] Speaker of the House from 1856 to 1857

[22] Dean of the House from 1869 to 1875

[secondhouse-23] Second time; previously served non-consecutive term(s) in the House

[25] Various positions:
President pro tempore (May 25 – May 30, 1912)

Senate Republican Leader (de facto) (1918–1924)

Dean of the Senate (1918–1924)

[68] President pro tempore (May 25 – May 30, 1912)

[69] Senate Republican Leader (de facto) (1918–1924)

[70] Dean of the Senate (1918–1924)

[gillett-26] Various positions:
Speaker of the House (1919–1925, interrupted from December 3–5, 1923)

Dean of the House (1919–1925)

House Republican Leader (1919–1925)

[72] Speaker of the House (1919–1925, interrupted from December 3–5, 1923)

[73] Dean of the House (1919–1925)

[74] House Republican Leader (1919–1925)

[30] House Republican Leader from 1939 to 1959; Speaker of the House from 1947 to 1949, 1953 to 1955

[31] Speaker of the House and House Democratic Leader from 1962 to 1971

[32] Speaker of the House and House Democratic Leader from 1977 to 1987

[formerdelegate-33] Former non-voting delegate to the House of Representatives

[atlarge-36] ^ ^a ^b ^c ^d ^e ^f Sole representative (at-large district)

[formersenate-38] Representative who previously served as a senator

[43] President pro tempore from December 4 to December 5, 1854

[46] President pro tempore from June 9 to June 10, 1856

[48] Dean of the Senate from 1874 to 1875

[53] President pro tempore from 1875 to 1879

[63] President pro tempore from 1947 to 1949

[64] House Republican Leader from 1965 to 1973

[65] Dean of the House from 1995 to 2015

[66] Dean of the House from 2015 to 2017

[second-75] Second time

[80] Elected as Farmer-Labor until 1941

[formervp-81] Former Vice President (ex officio President of the Senate)

[dr-85] Elected as Democratic-Republican until 1825

[88] Sole representative (at-large district) until reapportionment in 1832–33 House elections

[89] President pro tempore from June to November 1834

[91] Elected as National Republican until 1837

[111] Senate Democratic Leader from 1909 to 1911

[112] House Democratic Leader from 1903 to 1909

[117] President pro tempore from January to June 1941

[119] Various positions:
President pro tempore (1972–1978)

Dean of the Senate (1975–1978, alongside John L. McClellan until 1977)

[100] President pro tempore (1972–1978)

[101] Dean of the Senate (1975–1978, alongside John L. McClellan until 1977)

[121] Dean of the House from 1979 to 1995

[122] Dean of the Senate from 1981 to 1989; President pro tempore from 1987 to 1989

[124] Dean of the House from 1890 to 1895

[125] House Democratic Leader from 1909 to 1921; Speaker of the House from 1911 to 1919

[128] House Democratic Leader from 1995 to 2003

[senatorlegis-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j Senator elected by state legislature intra-term prior to ratification of Seventeenth Amendment; seniority calculated from election date (if different from date the seat was filled)

[past-5] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l Shares seniority date with other officeholder(s); credited as sole dean by past non-consecutive terms in Congress

[lateelection-7] Elected late

[housevacancy-11] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p Representative elected to fill vacancy; seniority calculated from date of special election (if different from date the seat was filled)^[1] Cite error: The named reference "housevacancy" was defined multiple times with different content (see the help page).

[codeanex-19] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k Shares seniority date with more than two other Representatives (thus unable to count as co-deans); credited as sole dean due to surname coming first alphabetically

[appoint-27] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q Senator appointed to fill intra-term vacancy; seniority calculated from date of appointment

[senatevacancy-28] ^ ^a ^b ^c ^d ^e ^f ^g Senator elected to fill intra-term vacancy after ratification of the Seventeenth Amendment; seniority calculated from date the individual assumed office

[seatedlateoffice-29] Seated late by virtue of holding other political, governmental, or judicial office

[34] Seniority over John Norvell due to tenure as delegate to the House of Representatives from Michigan Territory

[35] Seniority over John Norvell and Isaac E. Crary due to tenure as delegate to the House of Representatives from Michigan Territory

[37] John Norvell and Isaac E. Crary share a seniority date of January 26, 1837; Norvell's tenure as a shadow senator from Michigan Territory did not count as congressional service.

[turnover-44] ^ ^a ^b ^c ^d ^e ^f ^g Preceding elections involved turnover of all sitting incumbents; incoming officeholders share a seniority date with no distinguishing aspects

[turnoverpeckwalbridgewaldron-45] William A. Howard shared seniority with George Washington Peck (until March 4, 1857), David S. Walbridge, and Henry Waldron (until March 4, 1859)

[67] Seniority over Henry M. Rice due to past service as a senator from Illinois

[69] Shields had seniority over James M. Cavanaugh due to his service as a senator from Illinois from 1849 to 1855. Cavanaugh served as a non-voting delegate to the House of Representatives from Montana, which is inferior in seniority to Shields's service.

[70] Seniority over William Wallace Phelps due to past service as delegate to the House of Representatives from Montana Territory

[turnoveraldrich-72] William Windom shared seniority with Cyrus Aldrich until March 4, 1863

[74] Morton S. Wilkinson and Eugene M. Wilson shared seniority until March 3, 1871; Mark H. Dunnell shared seniority with John T. Averill until March 4, 1875

[83] Seniority over Thomas Hill Williams due to surname coming first alphabetically

[84] Seniority over Walter Leake and Thomas Hill Williams due to tenure as delegate to the House of Representatives from Mississippi Territory

[92] De jure; break in term from March 4 to November 22, 1833 due to state legislature's failure to elect

[seniorityclaibornedickson-94] Mississippi's at-large congressional district gained second seat in 1833; J. F. H. Claiborne shared seniority with David C. Dickson until July 31, 1836

[95] Elections contested; Claiborne and Samuel J. Gholson not seated until September 4, 1837

[seniorityclaibornegholson-96] Claiborne shared seniority with Gholson until seats declared vacant on February 5, 1838

[97] Elections contested; Thomas J. Word and Seargent Smith Prentiss not seated until May 30, 1838

[senioritymultims-98] Word and Prentiss shared seniority until retiring on March 3, 1839; Albert G. Brown and Jacob Thompson shared seniority until Brown's retirement on March 3, 1841

[105] Mississippi's congressional delegation was readmitted and sworn in on February 23, 1870; all had equal seniority until Hiram R. Revels was sworn in as a senator on February 25.

[107] Seniority over Hiram R. Revels; Revels was sworn in on February 25 after the Senate resolved a challenge to his credentials^[42]

[turnovercivil-108] All newly-seated post-Civil War officeholders share seniority date of February 23, 1870

[109] Seniority only in relation to Adelbert Ames; no House dean until 1873

[127] Served more prior non-consecutive terms in total (two) than Jacob L. Milligan (one partial) during the 73rd Congress

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