| John Sununu (R) - New Hampshire | Ted Stevens (R) - Alaska | Arlen Specter (R) - Pennsylvania |
| Olympia Snowe (R) - Maine | Gordon Smith (R) - Oregon | Richard Shelby (R) - Alabama |
| Jeff Sessions (R) - Alabama | Ken Salazar (D) - Colorado | John Rockefeller (D) - West Virginia |
| Pat Roberts (R) - Kansas | Mark Pryor (D) - Arkansas | Ben Nelson (D) - Nebraska |
| Bill Nelson (D) - Florida | Lisa Murkowski (R) - Alaska | Barbara Mikulski (D) - Maryland |
| Mitch McConnell (R) - Kentucky | Claire McCaskill (D) - Missouri | Mel Martinez (R) - Florida |
| Richard Lugar (R) - Indiana | Joseph Lieberman (I) - Connecticut | Mary Landrieu (D) - Louisiana |
| 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 | Michael Enzi (R) - Wyoming | John Ensign (R) - Nevada |
| 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 | Susan Collins (R) - Maine | Norm Coleman (R) - Minnesota |
| Thad Cochran (R) - Mississippi | Tom Coburn (R) - Oklahoma | Saxby Chambliss (R) - Georgia |
| Thomas Carper (D) - Delaware | Richard Burr (R) - North Carolina | Jim Bunning (R) - Kentucky |
| Sam Brownback (R) - Kansas | Christopher Bond (R) - Missouri | Robert Bennett (R) - Utah |
| Evan Bayh (D) - Indiana | John Barrasso (R) - Wyoming | Wayne Allard (R) - Colorado |
| Lamar Alexander (R) - Tennessee | John Thune (R) - South Dakota | David Vitter (R) - Louisiana |
| George Voinovich (R) - Ohio | Mark Warner (D) - Virginia | Roger Wicker (R) - Mississippi |
