| Alabama | Jeff Sessions,
Richard Shelby | | |
| Alaska | Lisa Murkowski,
Ted Stevens | | |
| Arizona | | Jon Kyl,
John McCain | |
| Arkansas | Blanche Lincoln,
Mark Pryor | | |
| California | Barbara Boxer,
Dianne Feinstein | | |
| Colorado | Wayne Allard,
Kenneth Salazar | | |
| Connecticut | Joseph Lieberman | Chris Dodd | |
| Delaware | Joe Biden,
Tom Carper | | |
| Florida | Mel Martinez,
Bill Nelson | | |
| Georgia | Saxby Chambliss,
Johnny Isakson | | |
| Hawaii | Daniel Akaka,
Daniel Inouye | | |
| Idaho | Larry Craig,
Mike Crapo | | |
| Illinois | Dick Durbin,
Barack Obama | | |
| Indiana | Richard Lugar | Evan Bayh | |
| Iowa | | Chuck Grassley,
Tom Harkin | |
| Kansas | Sam Brownback,
Pat Roberts | | |
| Kentucky | Jim Bunning,
Mitch McConnell | | |
| Louisiana | Mary Landrieu,
David Vitter | | |
| Maine | Susan Collins,
Olympia Snowe | | |
| Maryland | Barbara Mikulski,
Paul Sarbanes | | |
| Massachusetts | Edward Kennedy | John Kerry | |
| Michigan | Carl Levin,
Debbie Stabenow | | |
| Minnesota | Norm Coleman,
Mark Dayton | | |
| Mississippi | Thad Cochran,
Trent Lott | | |
| Missouri | Kit Bond,
Jim Talent | | |
| Montana | | Max Baucus,
Conrad Burns | |
| Nebraska | Chuck Hagel,
Ben Nelson | | |
| Nevada | Harry Reid | John Ensign | |
| New Hampshire | Judd Gregg | John Sununu | |
| New Jersey | Frank Lautenberg | | Jon Corzine |
| New Mexico | Jeff Bingaman,
Pete Domenici | | |
| New York | Hillary Clinton,
Chuck Schumer | | |
| North Carolina | Richard Burr,
Liddy Dole | | |
| North Dakota | Kent Conrad | Byron Dorgan | |
| Ohio | Mike DeWine,
George Voinovich | | |
| Oklahoma | James Inhofe | Tom Coburn | |
| Oregon | Gordon Smith,
Ron Wyden | | |
| Pennsylvania | Rick Santorum,
Arlen Specter | | |
| Rhode Island | Lincoln Chafee,
Jack Reed | | |
| South Carolina | Jim DeMint,
Lindsey Graham | | |
| South Dakota | | Tim Johnson,
John Thune | |
| Tennessee | Lamar Alexander,
Bill Frist | | |
| Texas | John Cornyn,
Kay Bailey Hutchison | | |
| Utah | Bob Bennett,
Orrin Hatch | | |
| Vermont | James Jeffords,
Patrick Leahy | | |
| Virginia | George Allen,
John Warner | | |
| Washington | Maria Cantwell,
Patty Murray | | |
| West Virginia | Robert Byrd,
Jay Rockefeller | | |
| Wisconsin | Herb Kohl | Russ Feingold | |
| Wyoming | | Mike Enzi,
Craig Thomas | |