Rank |
Senator (party-state) |
Seniority date |
Other factors
|
1 |
Ellison D. Smith (D-SC) [8] |
March 4, 1909 |
|
2 |
Kenneth McKellar (D-TN) |
March 4, 1917 |
|
3 |
Hiram Johnson (R-CA) |
March 16, 1917
|
4 |
Charles L. McNary (R-OR) [9] |
December 18, 1918 |
|
5 |
Arthur Capper (R-KS) |
March 4, 1919 |
|
6 |
Carter Glass (D-VA) |
February 2, 1920
|
7 |
Walter F. George (D-GA) |
November 22, 1922
|
8 |
Henrik Shipstead (R-MN) |
March 4, 1923 |
Minnesota 17th in population (1920)
|
9 |
Burton K. Wheeler (D-MT) |
Montana 39th in population (1920)
|
10 |
Robert M. La Follette Jr. (WP-WI) |
September 30, 1925
|
11 |
Gerald Nye (R-ND) [10] |
November 14, 1925
|
12 |
David I. Walsh (D-MA) |
December 6, 1926 |
|
13 |
Carl Hayden (D-AZ) |
March 4, 1927 |
Former representative (15 years)
|
14 |
Alben W. Barkley (D-KY) |
Former representative (14 years)
|
15 |
Elmer Thomas (D-OK) |
Former representative (4 years), Oklahoma 21st in population (1920)
|
16 |
Millard Tydings (D-MD) |
Former representative (4 years), Maryland 28th in population (1920)
|
17 |
Robert F. Wagner (D-NY) |
|
18 |
Arthur H. Vandenberg (R-MI) |
March 31, 1928
|
19 |
Tom Connally (D-TX) |
March 4, 1929 |
|
20 |
James J. Davis (R-PA) [10] |
December 2, 1930
|
21 |
Wallace H. White Jr. (R-ME) |
March 4, 1931 |
Former representative
|
22 |
Josiah W. Bailey (D-NC) |
North Carolina 12th in population (1930)
|
23 |
John H. Bankhead II (D-AL) |
Alabama 15th in population (1930)
|
24 |
Warren Austin (R-VT) |
April 1, 1931 |
|
25 |
Hattie Caraway (D-AR) [10] |
November 13, 1931
|
26 |
Robert R. Reynolds (D-NC) [10] |
December 5, 1932
|
27 |
Richard Russell Jr. (D-GA) |
January 12, 1933 |
|
28 |
Bennett Champ Clark (D-MO) [10] |
February 4, 1933
|
29 |
John H. Overton (D-LA) |
March 4, 1933 |
Former representative
|
30 |
Harry F. Byrd Sr. (D-VA) |
Former governor
|
31 |
Frederick Van Nuys (D-IN) [11] |
Indiana 11th in population (1930)
|
32 |
Homer T. Bone (D-WA) [12] |
Washington 30th in population (1930)
|
33 |
Elbert D. Thomas (D-UT) |
Utah 40th in population (1930)
|
34 |
Pat McCarran (D-NV) |
Nevada 48th in population (1930)
|
35 |
Carl Hatch (D-NM) |
October 10, 1933
|
36 |
Joseph C. O'Mahoney (D-WY) |
January 1, 1934
|
37 |
James Murray (D-MT) |
November 7, 1934
|
38 |
Peter G. Gerry (D-RI) |
January 3, 1935 |
Previously a senator
|
39 |
George L. P. Radcliffe (D-MD) |
Former representative
|
40 |
Theodore G. Bilbo (D-MS) |
Former governor (twice)
|
41 |
Joseph F. Guffey (D-PA) |
Pennsylvania 2nd in population (1930)
|
42 |
Harry S. Truman (D-MO) |
Missouri 10th in population (1930)
|
43 |
Francis T. Maloney (D-CT) |
Connecticut 29th in population (1930)
|
44 |
Dennis Chavez (D-NM) |
May 11, 1935 |
|
45 |
Guy Mark Gillette (D-IA) [10] |
November 4, 1936 |
Former representative
|
46 |
Charles O. Andrews (D-FL) |
|
47 |
Claude Pepper (D-FL) |
|
48 |
Edwin C. Johnson (D-CO) |
January 3, 1937 |
Former governor, Colorado 33rd in population (1930)
|
49 |
Theodore F. Green (D-RI) |
Former governor, Rhode Island 37th in population (1930)
|
50 |
Styles Bridges (R-NH) |
Former governor, New Hampshire 41st in population (1930)
|
51 |
Henry Cabot Lodge Jr. (R-MA) [13] |
Massachusetts 8th in population (1930)
|
52 |
Allen J. Ellender (D-LA) |
Louisiana 22nd in population (1930)
|
53 |
Joseph L. Hill (D-AL) |
January 11, 1938
|
54 |
William Warren Barbour (R-NJ) [14] |
November 9, 1938 |
Previously a senator
|
55 |
Tom Stewart (D-TN)
|
56 |
James M. Mead (D-NY) |
December 3, 1938
|
57 |
Scott W. Lucas (D-IL) |
January 3, 1939 |
Former representative (4 years), Illinois 3rd in population (1930)
|
58 |
D. Worth Clark (D-ID) |
Former representative (4 years), Idaho 42nd in population (1930)
|
59 |
Charles W. Tobey (R-NH) |
Former representative (2 years)
|
60 |
Clyde M. Reed (R-KS) |
Former governor
|
61 |
Robert A. Taft (R-OH) |
Ohio 4th in population (1930)
|
62 |
Sheridan Downey (D-CA) |
California 6th in population (1930)
|
63 |
Alexander Wiley (R-WI) |
Wisconsin 13th in population (1930)
|
64 |
John A. Danaher (R-CT) [10] |
Connecticut 29th in population (1930)
|
65 |
Rufus C. Holman (R-OR) [10] |
Oregon 34th in population (1930)
|
66 |
John Chandler Gurney (R-SD) |
South Dakota 36th in population (1930)
|
67 |
Albert B. Chandler (D-KY) |
October 9, 1939
|
68 |
John Thomas (R-ID) |
January 27, 1940 |
|
69 |
C. Wayland Brooks (R-IL) |
November 22, 1940
|
70 |
Monrad C. Wallgren (D-WA) |
December 19, 1940
|
71 |
Abe Murdock (D-UT) |
January 3, 1941 |
Former representative (8 years)
|
72 |
Ralph Owen Brewster (R-ME) |
Former representative (6 years)
|
73 |
William Langer (R-ND) |
Former governor
|
74 |
Harold H. Burton (R-OH) |
Ohio 4th in population (1940)
|
75 |
Raymond E. Willis (R-IN) |
Indiana 12th in population (1940)
|
76 |
Harley M. Kilgore (D-WV) |
West Virginia 24th in population (1940)
|
77 |
Hugh A. Butler (R-NE) |
Nebraska 32nd in population (1940)
|
78 |
Ernest McFarland (D-AZ) |
Arizona 43rd in population (1940)
|
79 |
James M. Tunnell (D-DE) |
Delaware 47th in population (1940)
|
80 |
George Aiken (R-VT) |
January 10, 1941 |
|
81 |
W. Lee O'Daniel (D-TX) |
August 4, 1941
|
82 |
Burnet R. Maybank (D-SC) |
November 5, 1941
|
83 |
Eugene D. Millikin (R-CO) |
December 20, 1941
|
84 |
James G. Scrugham (D-NV) |
December 7, 1942
|
85 |
Joseph H. Ball (R-MN) |
January 3, 1943 |
Former senator (2 years)
|
86 |
James Eastland (D-MS) |
Former senator (1 year)
|
87 |
Harlan J. Bushfield (R-SD) |
Former governor, South Dakota 37th in population (1940)
|
88 |
C. Douglass Buck (R-DE) |
Former governor, Delaware 47th in population (1940)
|
89 |
Homer S. Ferguson (R-MI) |
Michigan 7th in population (1940)
|
90 |
Albert W. Hawkes (R-NJ) |
New Jersey 9th in population (1940)
|
91 |
Edward H. Moore (R-OK) |
Oklahoma 22nd in population (1940)
|
92 |
W. Chapman Revercomb (R-WV) |
West Virginia 24th in population (1940)
|
93 |
John Little McClellan (D-AR) |
Former representative (4 years), Arkansas 25th in population (1940)
|
94 |
Kenneth S. Wherry (R-NE) |
Nebraska 32nd in population (1940)
|
95 |
Edward V. Robertson (R-WY) |
Wyoming 46th in population (1940)
|
96 |
George A. Wilson (R-IA) |
January 14, 1943
|
|
Arthur Walsh (R-NJ) [15] |
November 26, 1943
|
|
Samuel D. Jackson (D-IN) [16] |
January 28, 1944
|
|
Sinclair Weeks (R-MA) [10] |
February 8, 1944
|
|
Guy Cordon (R-OR) |
March 4, 1944
|
|
William E. Jenner (R-IN) [10] |
November 14, 1944
|
|
Wilton E. Hall (D-SC) [10] |
November 20, 1944
|
|
Howard A. Smith (R-NJ) |
December 7, 1944
|
|
Warren G. Magnuson (D-WA) |
December 14, 1944 |
|