| Ted Stevens (R) - Alaska | Arlen Specter (R) - Pennsylvania | Olympia Snowe (R) - Maine |
| Richard Shelby (R) - Alabama | Jeff Sessions (R) - Alabama | Rick Santorum (R) - Pennsylvania |
| Ken Salazar (D) - Colorado | John Rockefeller (D) - West Virginia | Harry Reid (D) - Nevada |
| Mark Pryor (D) - Arkansas | Ben Nelson (D) - Nebraska | Bill Nelson (D) - Florida |
| 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 | Mary Landrieu (D) - Louisiana | Jon Kyl (R) - Arizona |
| Herbert Kohl (D) - Wisconsin | Tim Johnson (D) - South Dakota | James Jeffords (R) - Vermont |
| Johnny Isakson (R) - Georgia | 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 | William Frist (R) - Tennessee |
| 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 |
| 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 |
| Robert Byrd (D) - West Virginia | Richard Burr (R) - North Carolina | Conrad Burns (R) - Montana |
| Jim Bunning (R) - Kentucky | Sam Brownback (R) - Kansas | Christopher Bond (R) - Missouri |
| Robert Bennett (R) - Utah | Max Baucus (D) - Montana | George Allen (R) - Virginia |
| Wayne Allard (R) - Colorado | Lamar Alexander (R) - Tennessee | James Talent (R) - Missouri |
| Craig Thomas (R) - Wyoming | John Thune (R) - South Dakota | David Vitter (R) - Louisiana |
| George Voinovich (R) - Ohio | John Warner (R) - Virginia |
