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.

Guidelines

[edit]

Checklist

[edit]

Check all dates (Congress sessions, individual terms, deanships, ayds)
Check seniority (shared seniority, alphabetical precedence, combined House and Senate tenures, causes of departure)
Check numbered seniority (if death caused seniority to go up independent of list number)

Seniority criteria

[edit]

Number of consecutive terms (for speed, use seniority date)
Number of past, non-consecutive terms
Alphabetical order of surname (if more than two people fulfill same seniority after above criteria, use individual with earliest surname in alphabet)
For Representatives elected to fill vacancy, seniority is calculated from date of special election. Column-wise (Congress), at-large representatives use the date they were sworn in.

BLANK

[edit]

Senior members of -- 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)
1st	March 4, 1789 – March 4, 1791
2nd	March 4, 1791 – March 4, 1793
3rd	March 4, 1793 – March 4, 1795
4th	March 4, 1795 – March 4, 1797
5th	March 4, 1797 – March 4, 1799
6th	March 4, 1799 – March 4, 1801
7th	March 4, 1801 – March 4, 1803
8th	March 4, 1803 – March 4, 1805
9th	March 4, 1805 – March 4, 1807
10th	March 4, 1807 – March 4, 1809
11th	March 4, 1809 – March 4, 1811
12th	March 4, 1811 – March 4, 1813
13th	March 4, 1813 – March 4, 1815
14th	March 4, 1815 – March 4, 1817
15th	March 4, 1817 – March 4, 1819
16th	March 4, 1819 – March 4, 1821
17th	March 4, 1821 – March 4, 1823
18th	March 4, 1823 – March 4, 1825
19th	March 4, 1825 – March 4, 1827
20th	March 4, 1827 – March 4, 1829
21st	March 4, 1829 – March 4, 1831
22nd	March 4, 1831 – March 4, 1833
23rd	March 4, 1833 – March 4, 1835
24th	March 4, 1835 – March 4, 1837
25th	March 4, 1837 – March 4, 1839
26th	March 4, 1839 – March 4, 1841
27th	March 4, 1841 – March 4, 1843
28th	March 4, 1843 – March 4, 1845
29th	March 4, 1845 – March 4, 1847
30th	March 4, 1847 – March 4, 1849
31st	March 4, 1849 – March 4, 1851
32nd	March 4, 1851 – March 4, 1853
33rd	March 4, 1853 – March 4, 1855
34th	March 4, 1855 – March 4, 1857
35th	March 4, 1857 – March 4, 1859
36th	March 4, 1859 – March 4, 1861
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 – March 4, 1871
42nd	March 4, 1871 – March 4, 1873
43rd	March 4, 1873 – March 4, 1875
44th	March 4, 1875 – March 4, 1877
45th	March 4, 1877 – March 4, 1879
46th	March 4, 1879 – March 4, 1881
47th	March 4, 1881 – March 4, 1883
48th	March 4, 1883 – March 4, 1885
49th	March 4, 1885 – March 4, 1887
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
55th	March 4, 1897 – March 4, 1899
56th	March 4, 1899 – March 4, 1901
57th	March 4, 1901 – March 4, 1903
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
62nd	March 4, 1911 – March 4, 1913
63rd	March 4, 1913 – March 4, 1915
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 – March 4, 1925
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
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
80th	January 3, 1947 – January 3, 1949
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
91st	January 3, 1969 – January 3, 1971
92nd	January 3, 1971 – January 3, 1973
93rd	January 3, 1973 – January 3, 1975
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
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
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
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)

Montana

[edit]

Senior members of Montana's congressional delegation (1913–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)
63rd	March 4, 1913 – March 4, 1915	Henry L. Myers Seniority from March 4, 1911 (11 years, 364 days) (retired)	Myers (Senate) Seniority from March 4, 1911 (11 years, 364 days)	No clear dean^[a]^[b]
64th	March 4, 1915 – March 4, 1917			No clear dean^[a]^[b]
65th	March 4, 1917 – March 4, 1919			John M. Evans Seniority from March 4, 1913 (7 years, 364 days) (lost re-election)^[1]
66th	March 4, 1919 – March 4, 1921
67th	March 4, 1921 – March 4, 1923	Thomas J. Walsh Seniority from March 4, 1913 (19 years, 304 days) (died)	Walsh (Senate) Seniority from March 4, 1913 (19 years, 304 days)	Carl W. Riddick Seniority from March 4, 1919 (3 years, 364 days) (ran for Senate)
68th	March 4, 1923 – March 4, 1925			John M. Evans^[A] Seniority from March 4, 1923^[c] (9 years, 364 days) (lost renomination)^[1]
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 2, 1933
72nd	March 2, 1933 – March 4, 1933	Burton K. Wheeler Seniority from March 4, 1923 (23 years, 305 days) (lost renomination)	Evans (House) Seniority from March 4, 1923^[c] (9 years, 364 days)
73rd	March 4, 1933 – January 3, 1935		Wheeler (Senate) Seniority from March 4, 1923 (23 years, 305 days)	No clear dean^[a]^[d]
74th	January 3, 1935 – January 3, 1937
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – January 3, 1941			James F. O'Connor Seniority from January 3, 1937 (8 years, 12 days) (died)
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945
79th	January 3, 1945 – January 15, 1945
79th	January 15, 1945 – January 3, 1947			Mike Mansfield Seniority from January 3, 1943 (10 years, 0 days) (elected to Senate)
80th	January 3, 1947 – January 3, 1949	James E. Murray Seniority from November 7, 1934^[e] (26 years, 57 days) (retired)	Murray (Senate) Seniority from November 7, 1934 (26 years, 57 days)
81st	January 3, 1949 – January 3, 1951
82nd	January 3, 1951 – January 3, 1953
83rd	January 3, 1953 – January 3, 1955			Wesley A. D'Ewart Seniority from June 5, 1945^[f] (9 years, 212 days) (ran for Senate)
84th	January 3, 1955 – January 3, 1957			Lee Metcalf Seniority from January 3, 1953 (8 years, 0 days) (elected to Senate)
85th	January 3, 1957 – January 3, 1959
86th	January 3, 1959 – January 3, 1961
87th	January 3, 1961 – January 3, 1963	Mike Mansfield^[B]^[C] Seniority from January 3, 1953 (24 years, 0 days) (retired)	Mansfield (House and Senate) Seniority from January 3, 1943 (34 years, 0 days)	No clear dean^[a]^[g]
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 – February 27, 1969
91st	February 27, 1969 – January 3, 1971			Arnold Olsen Seniority from January 3, 1961 (10 years, 0 days) (lost re-election)
92nd	January 3, 1971 – January 3, 1973			John Melcher Seniority from June 24, 1969^[f] (7 years, 193 days) (elected to Senate)
93rd	January 3, 1973 – January 3, 1975
94th	January 3, 1975 – January 3, 1977
95th	January 3, 1977 – January 12, 1978	Lee Metcalf^[C] Seniority from January 3, 1961 (17 years, 9 days) (died)	Metcalf (House and Senate) Seniority from January 3, 1953 (25 years, 9 days)	Max Baucus Seniority from January 3, 1975 (3 years, 345 days) (appointed to Senate)
	January 12, 1978 – December 14, 1978	John Melcher^[C] Seniority from January 3, 1977 (12 years, 0 days) (lost re-election)	Melcher (House and Senate) Seniority from June 24, 1969^[f] (19 years, 193 days)
	December 14, 1978 – January 3, 1979			Ron Marlenee Seniority from January 3, 1977 (16 years, 0 days) (lost re-election)
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	Max Baucus^[C] Seniority from December 15, 1978^[h] (35 years, 53 days) (appointed Ambassador to China)	Baucus (House and Senate) Seniority from January 3, 1975 (39 years, 34 days)
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995			Pat Williams^[D] Seniority from January 3, 1979 (18 years, 0 days) (retired)
104th	January 3, 1995 – January 3, 1997
105th	January 3, 1997 – January 3, 1999			Rick Hill^[D] Seniority from January 3, 1997 (4 years, 0 days) (retired)
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – January 3, 2003			Denny Rehberg^[D] Seniority from January 3, 2001 (12 years, 0 days) (ran for 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 – January 3, 2011
112th	January 3, 2011 – January 3, 2013
113th	January 3, 2013 – February 6, 2014			Steve Daines^[D] Seniority from January 3, 2013 (2 years, 0 days) (elected to Senate)
113th	February 6, 2014 – January 3, 2015	Jon Tester Seniority from January 3, 2007 (17 years, 256 days) (Incumbent)	Tester (Senate) Seniority from January 3, 2007 (17 years, 256 days)
114th	January 3, 2015 – January 3, 2017			Ryan Zinke^[D] Seniority from January 3, 2015 (2 years, 57 days) (appointed Secretary of the Interior)
115th	January 3, 2017 – March 1, 2017
	March 1, 2017 – June 21, 2017			Vacant
	June 21, 2017 – January 3, 2019			Greg Gianforte^[D] Seniority from May 25, 2017^[f] (3 years, 223 days) (elected Montana governor)
116th	January 3, 2019 – January 3, 2021
117th	January 3, 2021 – January 3, 2023			Matt Rosendale^[E] Seniority from January 3, 2021 (3 years, 256 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)

Nebraska

[edit]

Senior members of Nebraska's congressional delegation (1897–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)
55th	March 4, 1897 – March 4, 1899	William V. Allen Seniority from March 4, 1893 (5 years, 364 days) (lost re-election)	Co-deans: Allen (Senate) Mercer (House) Seniority from March 4, 1893 (5 years, 364 days)	David H. Mercer Seniority from March 4, 1893 (9 years, 364 days) (lost re-election)
56th	March 4, 1899 – March 4, 1901	John M. Thurston Seniority from March 4, 1895 (5 years, 364 days) (retired)	Mercer (House) Seniority from March 4, 1893 (9 years, 364 days)
57th	March 4, 1901 – March 28, 1901	William V. Allen^[F] Seniority from December 13, 1899^[h] (1 year, 105 days) (lost election to finish term)
57th	March 28, 1901 – March 4, 1903	Joseph Millard Seniority from March 28, 1901^[i]^[j] (5 years, 340 days) (retired)
58th	March 4, 1903 – March 4, 1905		Burkett (House and Senate) Seniority from March 4, 1899 (11 years, 364 days)	Elmer Burkett Seniority from March 4, 1899 (5 years, 364 days) (elected to Senate)
59th	March 4, 1905 – March 4, 1907			Edmund H. Hinshaw Seniority from March 4, 1903^[k] (7 years, 364 days) (retired)
60th	March 4, 1907 – March 4, 1909	Elmer Burkett^[C] Seniority from March 4, 1905 (5 years, 364 days) (lost renomination)^[3]
61st	March 4, 1909 – March 4, 1911
62nd	March 4, 1911 – March 4, 1913	Norris Brown Seniority from March 4, 1907 (5 years, 364 days) (lost renomination)^[4]	Co-deans: Norris^[G] (House and Senate) Kinkaid (House) Seniority from March 4, 1903 (19 years, 124 days)	Co-deans: Moses Kinkaid, George W. Norris Seniority from March 4, 1903 (9 years, 364 days) (Norris elected to Senate)
63rd	March 4, 1913 – March 4, 1915	Gilbert Hitchcock^[C] Seniority from March 4, 1911 (11 years, 364 days) (lost re-election)		Moses Kinkaid Seniority from March 4, 1903 (19 years, 124 days) (died)
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 – July 6, 1922
67th	July 6, 1922 – March 4, 1923		Norris (House and Senate) Seniority from March 4, 1903 (39 years, 305 days)	William E. Andrews^[H] Seniority from March 4, 1919^[c] (3 years, 364 days) (lost re-election)
68th	March 4, 1923 – March 4, 1925	George W. Norris^[I]^[C] Seniority from March 4, 1913 (29 years, 305 days) (lost re-election)		Melvin O. McLaughlin Seniority from March 4, 1919 (7 years, 364 days) (lost re-election)
69th	March 4, 1925 – March 4, 1927
70th	March 4, 1927 – March 4, 1929			Ashton C. Shallenberger^[H] Seniority from March 4, 1923^[c] (5 years, 364 days) (lost re-election)
71st	March 4, 1929 – March 4, 1931			Edgar Howard Seniority from March 4, 1923^[k] (9 years, 364 days) (co-dean after Simmons retired)
72nd	March 4, 1931 – March 4, 1933
73rd	March 4, 1933 – January 3, 1935			Co-deans: Edgar Howard, John H. Morehead Seniority from March 4, 1923 (11 years, 305 days) (Howard lost re-election, Morehead retired)
74th	January 3, 1935 – January 3, 1937			No clear dean^[a]
75th	January 3, 1937 – January 3, 1939			No clear dean^[a]
76th	January 3, 1939 – January 3, 1941			Harry B. Coffee Seniority from January 3, 1935^[k] (8 years, 0 days) (ran for Senate)^[5]
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – January 3, 1945	Hugh A. Butler Seniority from January 3, 1941 (13 years, 179 days) (died)	Stefan (House) Seniority from January 3, 1935 (16 years, 272 days)	Karl Stefan Seniority from January 3, 1935 (16 years, 272 days) (died)
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 – October 2, 1951
82nd	October 2, 1951 – January 3, 1953		Curtis (House and Senate) Seniority from January 3, 1939 (40 years, 0 days)	Carl Curtis Seniority from January 3, 1939 (15 years, 362 days) (appointed to Senate)
83rd	January 3, 1953 – July 1, 1954
	July 1, 1954 – November 8, 1954	Eva Bowring Seniority from April 16, 1954^[h] (206 days) (successor elected)
	November 8, 1954 – December 31, 1954	Roman Hruska^[C] Seniority from November 8, 1954^[e]^[l] (22 years, 49 days) (resigned)
	December 31, 1954 – January 3, 1955			Arthur L. Miller Seniority from January 3, 1943 (16 years, 0 days) (lost re-election)
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 3, 1959
86th	January 3, 1959 – January 3, 1961			Phil Weaver Seniority from January 3, 1955 (8 years, 0 days) (lost renomination)
87th	January 3, 1961 – January 3, 1963
88th	January 3, 1963 – January 3, 1965			Glenn Cunningham Seniority from January 3, 1959 (12 years, 0 days) (lost renomination)
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			David Martin Seniority from January 3, 1961 (13 years, 362 days) (resigned)
93rd	January 3, 1973 – December 31, 1974
93rd	December 31, 1974 – January 3, 1975			Co-deans: John Y. McCollister, Charles Thone Seniority from January 3, 1971 (6 years, 0 days) (McCollister ran for Senate)
94th	January 3, 1975 – December 27, 1976
94th	December 27, 1976 – January 3, 1977	Carl Curtis^[C] Seniority from January 1, 1955^[h] (24 years, 2 days) (retired)
95th	January 3, 1977 – January 3, 1979			Charles Thone Seniority from January 3, 1971 (8 years, 0 days) (elected Nebraska governor)
96th	January 3, 1979 – January 3, 1981	Edward Zorinsky Seniority from December 27, 1976^[h] (10 years, 69 days) (died)	V. Smith (House) Seniority from January 3, 1975 (16 years, 0 days)	Virginia D. Smith Seniority from January 3, 1975 (16 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 – March 6, 1987
100th	March 6, 1987 – January 3, 1989	J. James Exon Seniority from January 3, 1979 (18 years, 0 days) (retired)
101st	January 3, 1989 – January 3, 1991
102nd	January 3, 1991 – January 3, 1993		Co-deans: Exon (Senate) Bereuter (House) Seniority from January 3, 1979 (18 years, 0 days)	Doug Bereuter Seniority from January 3, 1979 (25 years, 241 days) (resigned)
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997
105th	January 3, 1997 – January 3, 1999	Bob Kerrey Seniority from January 3, 1989 (12 years, 0 days) (retired)	Bereuter (House) Seniority from January 3, 1979 (25 years, 241 days)
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – January 3, 2003	Chuck Hagel Seniority from January 3, 1997 (12 years, 0 days) (retired)
108th	January 3, 2003 – August 31, 2004
108th	August 31, 2004 – January 3, 2005		Hagel (Senate) Seniority from January 3, 1997 (12 years, 0 days)	Lee Terry Seniority from January 3, 1999 (16 years, 0 days) (lost re-election)
109th	January 3, 2005 – January 3, 2007
110th	January 3, 2007 – January 3, 2009
111th	January 3, 2009 – January 3, 2011	Ben Nelson Seniority from January 3, 2001 (12 years, 0 days) (retired)	Terry (House) Seniority from January 3, 1999 (16 years, 0 days)
112th	January 3, 2011 – January 3, 2013
113th	January 3, 2013 – January 3, 2015	Mike Johanns Seniority from January 3, 2009 (6 years, 0 days) (retired)
114th	January 3, 2015 – January 3, 2017	Deb Fischer Seniority from January 3, 2013 (11 years, 256 days) (Incumbent)	Fortenberry (House) Seniority from January 3, 2005 (17 years, 87 days)	Jeff Fortenberry Seniority from January 3, 2005 (17 years, 87 days) (resigned)
115th	January 3, 2017 – January 3, 2019
116th	January 3, 2019 – January 3, 2021
117th	January 3, 2021 – March 31, 2022
117th	March 31, 2022 – January 3, 2023		A. Smith (House) Seniority from January 3, 2007 (17 years, 256 days)	Adrian Smith Seniority from January 3, 2007 (17 years, 256 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)

Nevada

[edit]

Senior members of Nevada's congressional delegation (1893–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)
53rd	March 4, 1893 – March 4, 1895	John P. Jones^[J] Seniority from March 4, 1873 (29 years, 364 days) (retired)	Jones (Senate) Seniority from March 4, 1873 (29 years, 364 days)	Francis G. Newlands^[D] Seniority from March 4, 1893 (9 years, 364 days) (elected to Senate)
54th	March 4, 1895 – March 4, 1897
55th	March 4, 1897 – March 4, 1899
56th	March 4, 1899 – March 4, 1901
57th	March 4, 1901 – March 4, 1903
58th	March 4, 1903 – March 4, 1905	William M. Stewart^[K] Seniority from March 4, 1887 (17 years, 364 days) (retired)	Stewart (Senate) Seniority from March 4, 1887 (17 years, 364 days)	Clarence D. Van Duzer^[D] Seniority from March 4, 1903 (3 years, 364 days) (retired)
59th	March 4, 1905 – March 4, 1907	Francis G. Newlands^[C] Seniority from March 4, 1903 (14 years, 295 days) (died)	Newlands (House and Senate) Seniority from March 4, 1893 (24 years, 295 days)
60th	March 4, 1907 – March 4, 1909			George A. Bartlett^[D] Seniority from March 4, 1907 (3 years, 364 days) (retired)
61st	March 4, 1909 – March 4, 1911
62nd	March 4, 1911 – March 4, 1913			Edwin E. Roberts^[D] Seniority from March 4, 1911 (7 years, 364 days) (ran for Senate)^[6]
63rd	March 4, 1913 – March 4, 1915
64th	March 4, 1915 – March 4, 1917
65th	March 4, 1917 – December 24, 1917
65th	December 24, 1917 – March 4, 1919	Key Pittman^[L] Seniority from January 28, 1913^[m]^[7]^[8] (27 years, 287 days) (died)	Roberts (House) Seniority from March 4, 1911 (7 years, 364 days)
66th	March 4, 1919 – March 4, 1921		Pittman (Senate) Seniority from January 28, 1913 (27 years, 287 days)	Charles R. Evans^[D] Seniority from March 4, 1919 (1 year, 364 days) (lost re-election)
67th	March 4, 1921 – March 4, 1923			Samuel S. Arentz^[D] Seniority from March 4, 1921 (1 year, 364 days) (ran for Senate)^[9]
68th	March 4, 1923 – March 4, 1925			Charles L. Richards^[D] Seniority from March 4, 1923 (1 year, 364 days) (lost re-election)
69th	March 4, 1925 – March 4, 1927			Samuel S. Arentz^[A]^[D] Seniority from March 4, 1925 (7 years, 364 days) (lost re-election)^[10]
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			James G. Scrugham^[D] Seniority from March 4, 1933 (9 years, 278 days) (elected to Senate)^[11]
74th	January 3, 1935 – January 3, 1937
75th	January 3, 1937 – January 3, 1939
76th	January 3, 1939 – November 10, 1940
76th	November 10, 1940 – January 3, 1941	Pat McCarran Seniority from March 4, 1933 (21 years, 208 days) (died)	Co-deans: McCarran (Senate) Scrugham^[G] (House and Senate) Seniority from March 4, 1933 (12 years, 111 days)
77th	January 3, 1941 – December 7, 1942
77th	December 7, 1942 – January 3, 1943			Vacant
78th	January 3, 1943 – January 3, 1945			Maurice J. Sullivan^[D] Seniority from January 3, 1943 (2 years, 0 days) (lost renomination)^[12]
79th	January 3, 1945 – June 23, 1945			Berkeley L. Bunker^[M]^[D] Seniority from January 3, 1945 (2 years, 0 days) (ran for Senate)
79th	June 23, 1945 – January 3, 1947		McCarran (Senate) Seniority from March 4, 1933 (21 years, 208 days)
80th	January 3, 1947 – January 3, 1949			Charles H. Russell^[D] Seniority from January 3, 1947 (2 years, 0 days) (lost re-election)
81st	January 3, 1949 – January 3, 1951			Walter S. Baring Jr.^[D] Seniority from January 3, 1949 (4 years, 0 days) (lost re-election)
82nd	January 3, 1951 – January 3, 1953
83rd	January 3, 1953 – September 28, 1954			C. Clifton Young^[D] Seniority from January 3, 1953 (4 years, 0 days) (ran for Senate)
83rd	September 28, 1954 – January 3, 1955	George W. Malone Seniority from January 3, 1947 (12 years, 0 days) (lost re-election)	Malone (Senate) Seniority from January 3, 1947 (12 years, 0 days)
84th	January 3, 1955 – January 3, 1957
85th	January 3, 1957 – January 3, 1959			Walter S. Baring Jr.^[A]^[D] Seniority from January 3, 1957 (16 years, 0 days) (lost renomination)^[13]
86th	January 3, 1959 – January 3, 1961	Alan Bible Seniority from December 2, 1954^[e] (20 years, 15 days) (resigned)	Bible (Senate) Seniority from December 2, 1954 (20 years, 15 days)
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 – December 17, 1974			David Towell^[D] Seniority from January 3, 1973 (2 years, 0 days) (lost re-election)^[14]
93rd	December 17, 1974 – January 3, 1975	Howard Cannon Seniority from January 3, 1959 (24 years, 0 days) (lost re-election)	Cannon (Senate) Seniority from January 3, 1959 (24 years, 0 days)
94th	January 3, 1975 – January 3, 1977			James D. Santini^[D] Seniority from January 3, 1975 (8 years, 0 days) (ran for Senate)^[15]
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	Paul Laxalt Seniority from December 18, 1974^[h] (12 years, 16 days) (retired)	Laxalt (Senate) Seniority from December 18, 1974 (12 years, 16 days)	Co-deans: Harry Reid (D), Barbara Vucanovich (R) Seniority from January 3, 1983 (4 years, 0 days) (Reid elected to Senate)
99th	January 3, 1985 – January 3, 1987
100th	January 3, 1987 – January 3, 1989	Chic Hecht Seniority from January 3, 1983 (6 years, 0 days) (lost re-election)	No clear dean^[n]	Barbara Vucanovich Seniority from January 3, 1983 (14 years, 0 days) (retired)^[16]
101st	January 3, 1989 – January 3, 1991	Harry Reid^[N]^[C] Seniority from January 3, 1987 (30 years, 0 days) (retired)	Co-deans: Reid (House and Senate) Vucanovich (House) Seniority from January 3, 1983 (14 years, 0 days)
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995
104th	January 3, 1995 – January 3, 1997
105th	January 3, 1997 – January 3, 1999		Reid (House and Senate) Seniority from January 3, 1983 (34 years, 0 days)	John Ensign Seniority from January 3, 1995 (4 years, 0 days) (ran for Senate)
106th	January 3, 1999 – January 3, 2001			Jim Gibbons Seniority from January 3, 1997 (9 years, 362 days) (elected Nevada governor)
107th	January 3, 2001 – January 3, 2003
108th	January 3, 2003 – January 3, 2005
109th	January 3, 2005 – December 31, 2006
109th	December 31, 2006 – January 3, 2007			Shelley Berkley Seniority from January 3, 1999 (14 years, 0 days) (ran for Senate)
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			Joe Heck Seniority from January 3, 2011 (6 years, 0 days) (ran for Senate)
114th	January 3, 2015 – January 3, 2017
115th	January 3, 2017 – January 3, 2019	Dean Heller^[C] Seniority from May 9, 2011^[e] (7 years, 239 days) (lost re-election)	Heller (House and Senate) Seniority from January 3, 2007 (12 years, 0 days)	Mark Amodei Seniority from September 13, 2011^[f] (13 years, 2 days) (Incumbent)
116th	January 3, 2019 – January 3, 2021	Catherine Cortez Masto Seniority from January 3, 2017 (7 years, 256 days) (Incumbent)	Amodei (House) Seniority from September 13, 2011 (13 years, 2 days)
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)

New Hampshire

[edit]

New Jersey

[edit]

Senior members of New Jersey's congressional delegation (1879–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)
46th	March 4, 1879 – March 4, 1881	Theodore F. Randolph Seniority from March 4, 1875 (5 years, 364 days) (retired)	Co-deans: Randolph (Senate) Ross (House) Seniority from March 4, 1875 (5 years, 364 days)	Miles Ross Seniority from March 4, 1875 (7 years, 364 days) (lost re-election)^[17]
47th	March 4, 1881 – March 4, 1883	John R. McPherson Seniority from March 4, 1877 (17 years, 364 days) (retired)	Ross (House) Seniority from March 4, 1875 (7 years, 364 days)
48th	March 4, 1883 – March 4, 1885		McPherson (Senate) Seniority from March 4, 1877 (17 years, 364 days)	J. Hart Brewer Seniority from March 4, 1881 (3 years, 364 days) (retired)
49th	March 4, 1885 – March 4, 1887			William Walter Phelps^[H] Seniority from March 4, 1883^[c] (5 years, 364 days) (retired)^[18]
50th	March 4, 1887 – March 4, 1889
51st	March 4, 1889 – March 4, 1891			William McAdoo Seniority from March 4, 1883 (7 years, 364 days) (lost renomination)^[19]
52nd	March 4, 1891 – March 4, 1893			James Buchanan Seniority from March 4, 1885 (7 years, 364 days) (retired)
53rd	March 4, 1893 – March 4, 1895			Jacob A. Geissenhainer Seniority from March 4, 1889 (5 years, 364 days) (lost re-election)^[20]
54th	March 4, 1895 – March 4, 1897	James Smith Jr. Seniority from March 4, 1893 (5 years, 364 days) (retired)^[21]	Co-deans: J. Smith (Senate) Gardner, Loudenslager (House) Seniority from March 4, 1893 (5 years, 364 days)	Co-deans: John J. Gardner, Henry C. Loudenslager Seniority from March 4, 1893 (18 years, 161 days) (Loudenslager died)
55th	March 4, 1897 – March 4, 1899
56th	March 4, 1899 – March 4, 1901	William J. Sewell^[K] Seniority from March 4, 1895 (6 years, 298 days) (died)	Co-deans: Gardner, Loudenslager (House) Seniority from March 4, 1893 (18 years, 161 days)
57th	March 4, 1901 – December 27, 1901
57th	December 27, 1901 – March 4, 1903	John Kean^[C] Seniority from March 4, 1899 (11 years, 364 days) (retired)
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
62nd	March 4, 1911 – August 12, 1911	Frank O. Briggs Seniority from March 4, 1907 (5 years, 364 days) (lost re-election)
62nd	August 12, 1911 – March 4, 1913		Gardner (House) Seniority from March 4, 1893 (19 years, 364 days)	John J. Gardner Seniority from March 4, 1893 (19 years, 364 days) (lost re-election)
63rd	March 4, 1913 – March 4, 1915	James E. Martine Seniority from March 4, 1911 (5 years, 364 days) (lost re-election)	Hamill (House) Seniority from March 4, 1907 (13 years, 364 days)	James A. Hamill Seniority from March 4, 1907 (13 years, 364 days) (retired)
64th	March 4, 1915 – March 4, 1917
65th	March 4, 1917 – January 30, 1918	William Hughes^[C] Seniority from March 4, 1913 (4 years, 332 days) (died)
65th	January 30, 1918 – March 4, 1919	Joseph S. Frelinghuysen Sr. Seniority from March 4, 1917 (5 years, 364 days) (lost re-election)
66th	March 4, 1919 – March 4, 1921
67th	March 4, 1921 – March 4, 1923		Bacharach (House) Seniority from March 4, 1915 (7 years, 364 days)	Isaac Bacharach Seniority from March 4, 1915^[k] (7 years, 364 days) (co-dean after Hutchinson lost re-election)
68th	March 4, 1923 – March 4, 1925	Walter E. Edge Seniority from May 19, 1919^[o] (10 years, 186 days) (appointed Ambassador to France)^[22]	Co-deans: Bacharach, Lehlbach (House) Seniority from March 4, 1915 (21 years, 305 days)	Co-deans: Isaac Bacharach, Frederick R. Lehlbach Seniority from March 4, 1915 (21 years, 305 days) (both lost re-election)
69th	March 4, 1925 – March 4, 1927
70th	March 4, 1927 – March 4, 1929
71st	March 4, 1929 – November 21, 1929
71st	November 21, 1929 – March 4, 1931	Hamilton F. Kean Seniority from March 4, 1929 (5 years, 305 days) (lost re-election)
72nd	March 4, 1931 – March 4, 1933
73rd	March 4, 1933 – January 3, 1935
74th	January 3, 1935 – January 3, 1937	W. Warren Barbour Seniority from December 1, 1931^[h] (5 years, 33 days) (lost re-election)
75th	January 3, 1937 – January 17, 1938	A. Harry Moore Seniority from January 3, 1935 (3 years, 14 days) (elected New Jersey governor)	Seger (House) Seniority from March 4, 1923 (17 years, 175 days)	George N. Seger Seniority from March 4, 1923 (17 years, 175 days) (died)
75th	January 17, 1938 – January 3, 1939	William H. Smathers Seniority from January 3, 1937 (6 years, 0 days) (lost re-election)
76th	January 3, 1939 – August 26, 1940
76th	August 26, 1940 – January 3, 1941		Co-deans: Eaton, Norton (House) Seniority from March 4, 1925 (25 years, 305 days)	Co-deans: Charles Aubrey Eaton (R), Mary Teresa Norton (D) Seniority from March 4, 1925 (25 years, 305 days) (Norton retired)
77th	January 3, 1941 – January 3, 1943
78th	January 3, 1943 – November 22, 1943	W. Warren Barbour^[F] Seniority from November 8, 1938^[e] (5 years, 14 days) (died)
78th	November 22, 1943 – January 3, 1945	Albert W. Hawkes Seniority from January 3, 1943 (6 years, 0 days) (retired)
79th	January 3, 1945 – January 3, 1947
80th	January 3, 1947 – January 3, 1949
81st	January 3, 1949 – January 3, 1951	H. Alexander Smith Seniority from December 7, 1944^[e] (14 years, 27 days) (retired)
82nd	January 3, 1951 – January 3, 1953		Eaton (House) Seniority from March 4, 1925 (27 years, 305 days)	Charles Aubrey Eaton Seniority from March 4, 1925 (27 years, 305 days) (retired)
83rd	January 3, 1953 – January 3, 1955		Wolverton (House) Seniority from March 4, 1927 (31 years, 305 days)	Charles A. Wolverton Seniority from March 4, 1927 (31 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	Clifford P. Case^[C] Seniority from January 3, 1955 (24 years, 0 days) (lost renomination)	Canfield (House) Seniority from January 3, 1941 (20 years, 0 days)	Gordon Canfield Seniority from January 3, 1941 (20 years, 0 days) (retired)
87th	January 3, 1961 – January 3, 1963		Auchincloss (House) Seniority from January 3, 1943 (22 years, 0 days)	James C. Auchincloss Seniority from January 3, 1943 (22 years, 0 days) (retired)
88th	January 3, 1963 – January 3, 1965
89th	January 3, 1965 – January 3, 1967		Rodino (House) Seniority from January 3, 1949 (40 years, 0 days)	Peter W. Rodino Seniority from January 3, 1949 (40 years, 0 days) (retired)
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
94th	January 3, 1975 – January 3, 1977
95th	January 3, 1977 – January 3, 1979
96th	January 3, 1979 – January 3, 1981	Harrison A. Williams^[C] Seniority from January 3, 1959 (23 years, 67 days) (resigned)^[23]
97th	January 3, 1981 – March 11, 1982
97th	March 11, 1982 – January 3, 1983	Bill Bradley Seniority from January 3, 1979 (18 years, 0 days) (retired)
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		Roe (House) Seniority from November 4, 1969 (23 years, 60 days)	Robert A. Roe Seniority from November 4, 1969^[f] (23 years, 60 days) (retired)
102nd	January 3, 1991 – January 3, 1993
103rd	January 3, 1993 – January 3, 1995		Hughes (House) Seniority from January 3, 1975 (20 years, 0 days)	William J. Hughes Seniority from January 3, 1975 (20 years, 0 days) (retired)
104th	January 3, 1995 – January 3, 1997		Bradley (Senate) Seniority from January 3, 1979 (18 years, 0 days)	Co-deans: Marge Roukema, Chris Smith Seniority from January 3, 1981 (22 years, 0 days) (Roukema retired)
105th	January 3, 1997 – January 3, 1999	Frank Lautenberg Seniority from December 27, 1982^[h] (18 years, 7 days) (retired)	Co-deans: Roukema, C. Smith (House) Seniority from January 3, 1981 (22 years, 0 days)
106th	January 3, 1999 – January 3, 2001
107th	January 3, 2001 – January 3, 2003	Robert Torricelli^[C] Seniority from January 3, 1997 (6 years, 0 days) (withdrew)^[24]
108th	January 3, 2003 – January 3, 2005	Jon Corzine Seniority from January 3, 2001 (5 years, 14 days) (elected New Jersey governor)	C. Smith (House) Seniority from January 3, 1981 (43 years, 256 days)	Chris Smith Seniority from January 3, 1981 (43 years, 256 days) (Incumbent)
109th	January 3, 2005 – January 17, 2006
109th	January 17, 2006 – January 3, 2007	Frank Lautenberg^[F] Seniority from January 3, 2003 (10 years, 151 days) (died)
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 – June 3, 2013
113th	June 3, 2013 – January 3, 2015	Bob Menendez^[C] Seniority from January 17, 2006^[h]^[25] (18 years, 216 days) (resigned)
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 – August 20, 2024
118th	August 20, 2024 – present	Cory Booker Seniority from October 31, 2013^[e] (10 years, 320 days) (Incumbent)
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

[edit]

^ ^a ^b "EVANS, John Morgan (1863 – 1946)". Biographical Directory of the United States Congress. Retrieved July 2, 2024.
^ ^a ^b ^c "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.
^ "BURKETT, Elmer Jacob (1867 – 1935)". Biographical Directory of the United States Congress. Retrieved June 25, 2024.
^ "BROWN, Norris (1863 – 1960)". Biographical Directory of the United States Congress. Retrieved June 25, 2024.
^ "COFFEE, Harry Buffington (1890 – 1972)". Biographical Directory of the United States Congress. Retrieved June 27, 2024.
^ "ROBERTS, Edwin Ewing (1870 – 1933)". Biographical Directory of the United States Congress. Retrieved August 18, 2024.
^ The Journal of the Assembly of the Special Session of the Legislature of the State of Nevada. 1912. Carson City, Nevada. 1913. p. 28.((cite book)): CS1 maint: location missing publisher (link)
^ "The Journal of the Senate of the Special Session of the Legislature of the State of Nevada. 1912". Journal of the Proceedings of the Senate. Carson City, Nevada: 21. 1913. hdl:2027/uiug.30112108077089.
^ "ARENTZ, Samuel Shaw (Ulysses) (1879 – 1934)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "ARENTZ, Samuel Shaw (Ulysses) (1879 – 1934)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "SCRUGHAM, James Graves (1880 – 1945)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "SULLIVAN, Maurice Joseph (1884 – 1953)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "BARING, Walter Stephan, Jr. (1911 – 1975)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "TOWELL, David Gilmer (1937 – 2003)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "SANTINI, James David (1937 – 2015)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "VUCANOVICH, Barbara Farrell (1921 – 2013)". Biographical Directory of the United States Congress. Retrieved August 17, 2024.
^ "ROSS, Miles (1827 – 1903)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "PHELPS, William Walter (1839 – 1894)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "MCADOO, William (1853 – 1930)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "GEISSENHAINER, Jacob Augustus (1839 – 1917)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "SMITH, James, Jr. (1851 – 1927)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "EDGE, Walter Evans (1873 – 1956)". Biographical Directory of the United States Congress. Retrieved May 27, 2024.
^ "WILLIAMS, Harrison Arlington, Jr. (1919 – 2001)". Biographical Directory of the United States Congress. Retrieved May 3, 2024.
^ "TORRICELLI, Robert Guy (1951 – )". Biographical Directory of the United States Congress. Retrieved May 3, 2024.
^ "MENENDEZ, Robert (1954 – )". Biographical Directory of the United States Congress. Retrieved May 3, 2024.

Footnotes (positional)

[edit]

^ ^a ^b ^c Second time; previously served non-consecutive term(s) in the House
^ Senate Democratic Leader from 1961 to 1977
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r Senator who previously served in the House of Representatives
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ ^j ^k ^l ^m ⁿ ^o ^p ^q ^r ^s ^t ^u ^v ^w Sole representative (at-large district)
^ Sole representative (at-large district) until reapportionment in 2022 House elections
^ ^a ^b ^c Second time; previously served non-consecutive term(s) in the Senate
^ ^a ^b as junior senator
^ ^a ^b ^c Previously served non-consecutive term(s) in the House
^ Republican until 1936
^ Elected as Silver from 1895 to 1901
^ ^a ^b Previously served non-consecutive term(s) in the Senate
^ President pro tempore from 1933 to 1940
^ Representative who previously served as a senator
^ Senate Democratic Leader from 2005 to 2017

Footnotes (seniority)

[edit]

^ ^a ^b ^c ^d Preceding elections involved turnover of all sitting incumbents; incoming officeholders share a seniority date with no distinguishing aspects
^ John M. Evans shared seniority with Tom Stout until March 4, 1917
^ ^a ^b ^c ^d ^e Shares seniority date with other officeholder(s); credited as sole dean by past non-consecutive terms in Congress
^ Roy E. Ayers and Joseph P. Monaghan shared seniority until January 3, 1937; James F. O'Connor shared seniority with Jerry J. O'Connell until January 3, 1939
^ ^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 ^c ^d ^e ^f Representative elected to fill vacancy; seniority calculated from date of special election (if different from date the seat was filled)^[2] Cite error: The named reference "housevacancy" was defined multiple times with different content (see the help page).
^ Arnold Olsen shared seniority with James F. Battin until February 27, 1969
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Senator appointed to fill intra-term vacancy; seniority calculated from date of appointment
^ Elected late
^ Millard is considered Nebraska's senior senator due to a vacancy in the other Senate seat from William V. Allen's election loss.
^ ^a ^b ^c ^d 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
^ Seniority over Hazel Abel due to past service as a member of the House of Representatives
^ 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)
^ Chic Hecht, Harry Reid (Senate), and Barbara Vucanovich (House) share a seniority date of January 3, 1983.
^ Seated late by virtue of holding other political, governmental, or judicial office

Bibliography

[edit]

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