User:SuperWIKI/sandbox/State deans (8)

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

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Checklist

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  • 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

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  • 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

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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)

Connecticut

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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)

Maine

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Senior members of Maine's congressional delegation (1853–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)
33rd March 4, 1853
March 4, 1855
 
Hannibal Hamlin[A][B]
Seniority from June 8, 1848[a]
(8 years, 214 days)
(elected Maine governor)
Hamlin
(Senate)

Seniority from June 8, 1848
(8 years, 214 days)

 
Thomas J. D. Fuller
Seniority from March 4, 1849
(7 years, 364 days)
(retired)
34th March 4, 1855
January 7, 1857
January 7, 1857
March 4, 1857
 
William P. Fessenden[C][B]
Seniority from February 10, 1854[b]
(10 years, 142 days)
(appointed Secretary of the
Treasury
)
Fuller
(House)

Seniority from March 4, 1849
(7 years, 364 days)

35th March 4, 1857
March 4, 1859
Washburn
(House)

Seniority from March 4, 1851
(9 years, 303 days)

 
Israel Washburn Jr.
Seniority from March 4, 1851
(9 years, 303 days)
(elected Maine governor)
36th March 4, 1859
January 1, 1861
January 1, 1861
March 4, 1861
Fessenden
(Senate)

Seniority from February 10, 1854
(10 years, 142 days)

 
Freeman H. Morse[D]
Seniority from March 4, 1857[c]
(3 years, 364 days)
(retired)
37th March 4, 1861
December 1, 1862
No clear dean[d][e]
December 1, 1862
March 4, 1863
 
Samuel C. Fessenden
Seniority from March 4, 1861[f]
(1 year, 364 days)
(retired)
38th March 4, 1863
July 1, 1864
Co-deans:
   
Frederick A. Pike,
John H. Rice

Seniority from March 4, 1861
(5 years, 364 days)
(Rice retired)
July 1, 1864
March 4, 1865
 
Lot M. Morrill
Seniority from January 17, 1861[a]
(8 years, 45 days)
(lost re-election)
Morrill
(Senate)

Seniority from January 17, 1861
(8 years, 45 days)

39th March 4, 1865
March 4, 1867
40th March 4, 1867
March 4, 1869
 
Frederick A. Pike
Seniority from March 4, 1861
(7 years, 364 days)
(lost renomination)
41st March 4, 1869
September 8, 1869
 
William P. Fessenden[E][F]
Seniority from March 4, 1865
(4 years, 188 days)
(died)
Blaine
(House and Senate)

Seniority from March 4, 1863
(18 years, 1 day)

 
James G. Blaine[G]
Seniority from March 4, 1863
(13 years, 128 days)
(appointed to Senate)
September 8, 1869
March 4, 1871
 
Hannibal Hamlin[E][H]
Seniority from March 4, 1869
(11 years, 364 days)
(retired)
42nd March 4, 1871
March 4, 1873
43rd March 4, 1873
March 4, 1875
44th March 4, 1875
July 10, 1876
July 10, 1876
March 4, 1877
 
Eugene Hale
Seniority from March 4, 1869
(9 years, 364 days)
(lost re-election)
45th March 4, 1877
March 4, 1879
46th March 4, 1879
March 4, 1881
 
William P. Frye
Seniority from March 4, 1871
(10 years, 13 days)
(elected to Senate)
47th March 4, 1881
March 5, 1881
 
James G. Blaine[B]
Seniority from July 10, 1876[g]
(4 years, 238 days)
(appointed Secretary of State)
March 5, 1881
March 17, 1881
 
Eugene Hale[I][B]
Seniority from March 4, 1881
(29 years, 364 days)
(retired)
Frye
(House and Senate)

Seniority from March 4, 1871
(40 years, 157 days)

March 17, 1881
March 4, 1883
Co-deans:
   
Stephen Lindsey,
Thomas Brackett Reed

Seniority from March 4, 1877
(5 years, 364 days)
(Lindsey retired)
48th March 4, 1883
March 4, 1885
 
Thomas Brackett Reed[J]
Seniority from March 4, 1877
(22 years, 184 days)
(resigned)
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
September 4, 1899
September 4, 1899
March 4, 1901
 
Charles A. Boutelle
Seniority from March 4, 1883
(17 years, 364 days)
(resigned)[1]
57th March 4, 1901
March 4, 1903
 
Edwin C. Burleigh
Seniority from June 21, 1897[h]
(13 years, 255 days)
(lost re-election)[3]
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 8, 1911
 
William P. Frye[K][B]
Seniority from March 18, 1881
(30 years, 143 days)
(died)
Frank E. Guernsey
August 8, 1911
March 4, 1913
 
Charles F. Johnson
Seniority from March 4, 1911
(5 years, 364 days)
(lost re-election)
63rd March 4, 1913
March 4, 1915
64th March 4, 1915
March 4, 1917
65th March 4, 1917
March 4, 1919
 
Bert M. Fernald
Seniority from September 12, 1916[i]
(9 years, 345 days)
(died)
John A. Peters
66th March 4, 1919
March 4, 1921
67th March 4, 1921
January 2, 1922
January 2, 1922
March 4, 1923
Ira G. Hersey,
Wallace H. White
68th March 4, 1923
March 4, 1925
69th March 4, 1925
August 23, 1926
August 23, 1926
March 4, 1927
 
Frederick Hale
Seniority from March 4, 1917
(23 years, 305 days)
(retired)
70th March 4, 1927
March 4, 1929
71st March 4, 1929
March 4, 1931
Wallace H. White
72nd March 4, 1931
March 4, 1933
Carroll L. Beedy
73rd March 4, 1933
January 3, 1935
74th January 3, 1935
January 3, 1937
Edward C. Moran Jr.
75th January 3, 1937
January 3, 1939
Owen Brewster
76th January 3, 1939
January 3, 1941
77th January 3, 1941
January 3, 1943
 
Wallace H. White[L][B]
Seniority from March 4, 1931
(17 years, 305 days)
(retired)
James C. Oliver
78th January 3, 1943
January 3, 1945
Margaret Chase Smith
79th January 3, 1945
January 3, 1947
80th January 3, 1947
January 3, 1949
81st January 3, 1949
January 3, 1951
 
Owen Brewster[B]
Seniority from January 3, 1941
(11 years, 302 days)
(resigned)
Frank Fellows
82nd January 3, 1951
August 27, 1951
August 27, 1951
December 31, 1952
Robert Hale
December 31, 1952
January 3, 1953
 
Margaret Chase Smith[B]
Seniority from January 3, 1949
(24 years, 0 days)
(lost re-election)
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
Clifford McIntire
87th January 3, 1961
January 3, 1963
88th January 3, 1963
January 3, 1965
89th January 3, 1965
January 3, 1967
Stanley R. Tupper
90th January 3, 1967
January 3, 1969
William Hathaway
91st January 3, 1969
January 3, 1971
92nd January 3, 1971
January 3, 1973
93rd January 3, 1973
January 3, 1975
 
Edmund Muskie
Seniority from January 3, 1959
(21 years, 125 days)
(appointed Secretary of State)
Peter Kyros
94th January 3, 1975
January 3, 1977
William Cohen
95th January 3, 1977
January 3, 1979
96th January 3, 1979
May 7, 1980
David F. Emery
May 7, 1980
January 3, 1981
 
William Cohen[B]
Seniority from January 3, 1979
(18 years, 0 days)
(retired)[j]
97th January 3, 1981
January 3, 1983
98th January 3, 1983
January 3, 1985
Olympia Snowe
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
No clear dean
105th January 3, 1997
January 3, 1999
 
Olympia Snowe[B]
Seniority from January 3, 1995
(18 years, 0 days)
(retired)
Snowe
(House and Senate)

Seniority from January 3, 1979
(34 years, 0 days)

John Baldacci
106th January 3, 1999
January 3, 2001
107th January 3, 2001
January 3, 2003
108th January 3, 2003
January 3, 2005
Tom Allen
109th January 3, 2005
January 3, 2007
110th January 3, 2007
January 3, 2009
111th January 3, 2009
January 3, 2011
 
Mike Michaud
Seniority from January 3, 2003
(12 years, 0 days)
(ran for Maine governor)
112th January 3, 2011
January 3, 2013
113th January 3, 2013
January 3, 2015
 
Susan Collins
Seniority from January 3, 1997
(27 years, 184 days)
(Incumbent)
Collins
(Senate)

Seniority from January 3, 1997
(27 years, 184 days)

114th January 3, 2015
January 3, 2017
 
Chellie Pingree
Seniority from January 3, 2009
(15 years, 184 days)
(Incumbent)
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[d][k]
64th March 4, 1915
March 4, 1917
65th March 4, 1917
March 4, 1919
 
John M. Evans
Seniority from March 4, 1913
(7 years, 364 days)
(lost re-election)[4]
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[D]
Seniority from March 4, 1923[c]
(9 years, 364 days)
(lost renomination)[4]
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
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[d][l]
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
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[i]
(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[h]
(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[M][B]
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[d][m]
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
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[h]
(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[B]
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[B]
Seniority from January 3, 1977
(12 years, 0 days)
(lost re-election)
Melcher
(House and Senate)

Seniority from June 24, 1969[h]
(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[B]
Seniority from December 15, 1978[g]
(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[N]
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[N]
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[N]
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[N]
Seniority from January 3, 2013
(2 years, 0 days)
(elected to Senate)
February 6, 2014
January 3, 2015
 
Jon Tester
Seniority from January 3, 2007
(17 years, 184 days)
(Incumbent)
Tester
(Senate)

Seniority from January 3, 2007
(17 years, 184 days)

114th January 3, 2015
January 3, 2017
 
Ryan Zinke[N]
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[N]
Seniority from May 25, 2017[h]
(3 years, 223 days)
(elected Montana governor)
116th January 3, 2019
January 3, 2021
117th January 3, 2021
January 3, 2023
 
Matt Rosendale[O]
Seniority from January 3, 2021
(3 years, 184 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)

South Dakota

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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)

References

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  1. ^ "BOUTELLE, Charles Addison (1839 – 1901)". Biographical Directory of the United States Congress. Retrieved July 5, 2024.
  2. ^ a b "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.
  3. ^ "BURLEIGH, Edwin Chick (1843 – 1916)". Biographical Directory of the United States Congress. Retrieved July 5, 2024.
  4. ^ a b "EVANS, John Morgan (1863 – 1946)". Biographical Directory of the United States Congress. Retrieved July 2, 2024.

Footnotes (positional)

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  1. ^ Democrat until 1856
  2. ^ a b c d e f g h i j k l m n Senator who previously served in the House of Representatives
  3. ^ Opposition until 1860
  4. ^ a b Previously served non-consecutive term(s) in the House
  5. ^ a b Second time
  6. ^ Previously served non-consecutive term(s) in the Senate
  7. ^ Speaker of the House and House Republican Leader from 1869 to 1875
  8. ^ Former Vice President (ex officio President of the Senate)
  9. ^ Senate Republican Leader (de facto) from 1908 to 1911
  10. ^ Speaker of the House and House Republican Leader from 1889 to 1891, 1895 to 1899
  11. ^ President pro tempore from 1896 to 1911
  12. ^ Senate Republican Leader from 1944 to 1949
  13. ^ Senate Democratic Leader from 1961 to 1977
  14. ^ a b c d e f Sole representative (at-large district)
  15. ^ Sole representative (at-large district) until redistricting in 2022 House elections

Footnotes (seniority)

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  1. ^ a b 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)
  2. ^ Elected late
  3. ^ a b c Shares seniority date with other officeholder(s); credited as sole dean by past non-consecutive terms in Congress
  4. ^ a b c d Preceding elections involved turnover of all sitting incumbents; incoming officeholders share a seniority date with no distinguishing aspects
  5. ^ All newly-seated members shared seniority until T. A. D. Fessenden was elected on December 1, 1862
  6. ^ 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
  7. ^ a b Senator appointed to fill intra-term vacancy; seniority calculated from date of appointment
  8. ^ a b c d e 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).
  9. ^ a b Senator elected to fill intra-term vacancy after ratification of the Seventeenth Amendment; seniority calculated from date the individual assumed office
  10. ^ Subsequently appointed as Secretary of Defense, effective January 24, 1997; retirement unrelated to assumption of new office
  11. ^ John M. Evans shared seniority with Tom Stout until March 4, 1917
  12. ^ 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
  13. ^ Arnold Olsen shared seniority with James F. Battin until February 27, 1969

Bibliography

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