Rank | Name | Seniority Date | Other Factors |
1 | Strom Thurmond (R-SC) | November 7, 1956 |
2 | Robert Byrd (D-WV) | January 3, 1959 |
3 | Ted Kennedy (D-MA) | November 7, 1962 |
4 | Daniel Inouye (D-HI) | January 3, 1963 |
5 | Ernest Hollings (D-SC) | November 9, 1966 |
6 | Ted Stevens (R-AK) | December 24, 1968 |
7 | Bill Roth (R-DE) | January 1, 1971 |
8 | Jesse Helms (R-NC) | January 3, 1973 | North Carolina 12th population (1970) |
9 | Pete Domenici (R-NM) | New Mexico 37th population (1970) |
10 | Joe Biden (D-DE) | Delaware 46th population (1970) |
11 | John Glenn[5] (D-OH) | December 24, 1974 |
12 | Wendell H. Ford[5] (D-KY) | December 28, 1974 |
13 | Dale Bumpers[5] (D-AR) | January 3, 1975 | Former Governor |
14 | Patrick Leahy (D-VT) |
15 | John Chafee (R-RI) | December 29, 1976 |
16 | Paul Sarbanes (D-MD) | January 3, 1977 | Former Rep |
17 | Pat Moynihan (D-NY) | New York 2nd population (1970) |
18 | Richard Lugar (R-IN) | Indiana 11th population (1970) |
19 | Orrin Hatch (R-UT) | Utah 36th population (1970) |
20 | Max Baucus (D-MT) | December 15, 1978 |
21 | Thad Cochran (R-MS) | December 27, 1978 |
22 | John Warner (R-VA) | January 2, 1979 |
23 | Carl Levin (D-MI) | January 3, 1979 |
24 | Chris Dodd (D-CT) | January 3, 1981 | Former Rep (6 years) - Connecticut 24th population (1970) |
25 | Chuck Grassley (R-IA) | Former Rep (6 years) - Iowa 25th population (1970) |
26 | Al D'Amato[5] (R-NY) | New York 2nd population (1970) |
27 | Arlen Specter (R-PA) | Pennsylvania 3rd population (1970) |
28 | Don Nickles (R-OK) | Oklahoma 27th population (1970) |
29 | Frank Murkowski (R-AK) | Alaska 50th population (1970) |
30 | Frank Lautenberg[6] (D-NJ) | December 27, 1982 |
31 | Jeff Bingaman (D-NM) | January 3, 1983 |
32 | John Kerry (D-MA) | January 2, 1985 |
33 | Tom Harkin (D-IA) | January 3, 1985 | Former Rep (10 years) |
34 | Phil Gramm (R-TX) | Former Rep (6 years) |
35 | Mitch McConnell (R-KY) | |
36 | Jay Rockefeller (D-WV) | January 15, 1985 |
37 | John Breaux (D-LA) | January 3, 1987 | Former Rep (14 years) |
38 | Barbara Mikulski (D-MD) | Former Rep (10 years) |
39 | Richard Shelby (R-AL) | Former Rep (8 years) - Alabama 22nd population (1980) |
40 | Tom Daschle (D-SD) | Former Rep (8 years) - South Dakota 45th population (1980) |
41 | John McCain (R-AZ) | Former Rep (4 years) - Arizona 29th population (1980) |
42 | Harry Reid (D-NV) | Former Rep (4 years) - Nevada 43rd population (1980) |
43 | Bob Graham (D-FL) | Former Governor - Florida 7th population (1980) |
44 | Kit Bond (R-MO) | Former Governor - Missouri 15th population (1980) |
45 | Kent Conrad (D-ND) |
46 | Slade Gorton (R-WA) | January 3, 1989 | Previously a Senator |
47 | Trent Lott (R-MS) | Former Rep (16 Years) |
48 | Jim Jeffords (R-VT) | Former Rep (14 Years) |
49 | Dan Coats[5] (R-IN) | Former Rep (8 Years) |
50 | Connie Mack (R-FL) | Former Rep (6 Years) |
51 | Chuck Robb (D-VA) | Former Governor - Virginia 14th population (1980) |
52 | Richard Bryan (D-NV) | Former Governor - Nevada 43rd population (1980) |
53 | Bob Kerrey (D-NE) | Former Governor - Nebraska 35th population (1980) |
54 | Herb Kohl (D-WI) | Wisconsin 16th population (1980) |
55 | Joe Lieberman (D-CT) | Connecticut 25th population (1980) |
56 | Conrad Burns (R-MT) | Montana 44th population (1980) |
57 | Daniel Akaka (D-HI) | May 16, 1990 |
58 | Bob Smith (R-NH) | December 7, 1990 |
59 | Larry Craig (R-ID) | January 3, 1991 | Former Rep (6 years) |
60 | Paul Wellstone (D-MN) |
61 | Dianne Feinstein (D-CA) | November 10, 1992 |
62 | Byron Dorgan (D-ND) | December 15, 1992 |
63 | Barbara Boxer (D-CA) | January 3, 1993 | Former Rep (10 years) |
64 | Judd Gregg (R-NH) | Former Rep (8 years) Former Governor |
65 | Ben Nighthorse Campbell (R-CO) | Former Rep (6 years) |
66 | Carol Moseley Braun[5] (D-IL) | Illinois 6th population (1990) |
67 | Lauch Faircloth[5] (R-NC) | North Carolina 10th population (1990) |
68 | Paul Coverdell (R-GA) | Georgia 11th population (1990) |
69 | Russ Feingold (D-WI) | Wisconsin 16th population (1990) |
70 | Patty Murray (D-WA) | Washington 18th population (1990) |
71 | Bob Bennett (R-UT) | Utah 35th population (1990) |
72 | Dirk Kempthorne[5] (R-ID) | Idaho 42nd population (1990) |
73 | Kay Bailey Hutchison (R-TX) | June 14, 1993 |
74 | Jim Inhofe (R-OK) | November 17, 1994 |
75 | Fred Thompson (R-TN) | December 2, 1994 |
76 | Olympia Snowe (R-ME) | January 3, 1995 | Former Rep (16 years) |
77 | Mike DeWine (R-OH) | Former Rep (8 years) - Ohio 7th population (1990) |
78 | Jon Kyl (R-AZ) | Former Rep (8 years) - Arizona 24th population (1990) |
79 | Craig Thomas (R-WY) | Former Rep (6 years) |
80 | Rick Santorum (R-PA) | Former Rep (4 years) |
81 | Rod Grams (R-MN) | Former Rep (2 years) |
82 | John Ashcroft (R-MO) | Former Governor |
83 | Spencer Abraham (R-MI) | Michigan 8th population (1990) |
84 | Bill Frist (R-TN) | Tennessee 17th population (1990) |
85 | Ron Wyden (D-OR) | February 6, 1996 |
86 | Sam Brownback (R-KS) | November 7, 1996 |
87 | Pat Roberts (R-KS) | January 3, 1997 | Former Rep (16 years) |
88 | Richard Durbin (D-IL) | Former Rep (14 years) |
89 | Robert Torricelli (D-NJ) | Former Rep (13 years) |
90 | Tim Johnson (D-SD) | Former Rep (10 years) |
91 | Wayne Allard (R-CO) | Former Rep (6 years) - Colorado 26th population (1990) |
92 | Jack Reed (D-RI) | Former Rep (6 years) - Rhode Island 43rd population (1990) |
93 | Tim Hutchinson (R-AR) | Former Rep (4 years) |
94 | Max Cleland (D-GA) | Georgia 11th population (1990) |
95 | Mary Landrieu (D-LA) | Louisiana 21st population (1990) |
96 | Jeff Sessions (R-AL) | Alabama 22nd population (1990) |
97 | Gordon H. Smith (R-OR) | Oregon 29th population (1990) |
98 | Chuck Hagel (R-NE) | Nebraska 36th population (1990) |
99 | Susan Collins (R-ME) | Maine 38th population (1990) |
100 | Mike Enzi (R-WY) | Wyoming 50th population (1990) |