| Arlen Specter (R) - Pennsylvania | Olympia Snowe (R) - Maine | Gordon Smith (R) - Oregon |
| Richard Shelby (R) - Alabama | Jeff Sessions (R) - Alabama | Ken Salazar (D) - Colorado |
| Pat Roberts (R) - Kansas | Mark Pryor (D) - Arkansas | Ben Nelson (D) - Nebraska |
| Lisa Murkowski (R) - Alaska | Mitch McConnell (R) - Kentucky | John McCain (R) - Arizona |
| Mel Martinez (R) - Florida | Richard Lugar (R) - Indiana | Trent Lott (R) - Mississippi |
| Blanche Lincoln (D) - Arkansas | Joseph Lieberman (I) - Connecticut | Jon Kyl (R) - Arizona |
| Tim Johnson (D) - South Dakota | Johnny Isakson (R) - Georgia | Daniel Inouye (D) - Hawaii |
| James Inhofe (R) - Oklahoma | Kay Bailey Hutchison (R) - Texas | Orrin Hatch (R) - Utah |
| Chuck Hagel (R) - Nebraska | Judd Gregg (R) - New Hampshire | Chuck Grassley (R) - Iowa |
| Lindsey Graham (R) - South Carolina | Dianne Feinstein (D) - California | Michael Enzi (R) - Wyoming |
| John Ensign (R) - Nevada | Byron Dorgan (D) - North Dakota | Pete Domenici (R) - New Mexico |
| Elizabeth Dole (R) - North Carolina | Jim DeMint (R) - South Carolina | Mike Crapo (R) - Idaho |
| Larry Craig (R) - Idaho | John Cornyn (R) - Texas | Bob Corker (R) - Tennessee |
| Kent Conrad (D) - North Dakota | Susan Collins (R) - Maine | Norm Coleman (R) - Minnesota |
| Thad Cochran (R) - Mississippi | Tom Coburn (R) - Oklahoma | Saxby Chambliss (R) - Georgia |
| Thomas Carper (D) - Delaware | Robert Byrd (D) - West Virginia | Richard Burr (R) - North Carolina |
| Jim Bunning (R) - Kentucky | Sam Brownback (R) - Kansas | Christopher Bond (R) - Missouri |
| Robert Bennett (R) - Utah | John Barrasso (R) - Wyoming | Wayne Allard (R) - Colorado |
| Lamar Alexander (R) - Tennessee | Daniel Akaka (D) - Hawaii | Ted Stevens (R) - Alaska |
| John Sununu (R) - New Hampshire | John Thune (R) - South Dakota | David Vitter (R) - Louisiana |
| George Voinovich (R) - Ohio | John Warner (R) - Virginia |
