| 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 | | Chris Dodd,
Joseph Lieberman | |
| 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 | Evan Bayh,
Richard Lugar | | |
| Iowa | Chuck Grassley | Tom Harkin | |
| Kansas | Sam Brownback,
Pat Roberts | | |
| Kentucky | Jim Bunning,
Mitch McConnell | | |
| Louisiana | David Vitter | | Mary Landrieu |
| Maine | Susan Collins,
Olympia Snowe | | |
| Maryland | | Barbara Mikulski,
Paul Sarbanes | |
| Massachusetts | | Edward Kennedy,
John Kerry | |
| Michigan | Debbie Stabenow | Carl Levin | |
| Minnesota | Norm Coleman,
Mark Dayton | | |
| Mississippi | Thad Cochran,
Trent Lott | | |
| Missouri | Kit Bond,
Jim Talent | | |
| Montana | Conrad Burns | Max Baucus | |
| Nebraska | | Chuck Hagel,
Ben Nelson | |
| Nevada | John Ensign | Harry Reid | |
| New Hampshire | Judd Gregg,
John Sununu | | |
| New Jersey | | Jon Corzine,
Frank Lautenberg | |
| New Mexico | Pete Domenici | Jeff Bingaman | |
| New York | | Hillary Clinton,
Chuck Schumer | |
| North Carolina | Richard Burr,
Liddy Dole | | |
| North Dakota | Kent Conrad | Byron Dorgan | |
| Ohio | Mike DeWine | George Voinovich | |
| Oklahoma | Tom Coburn,
James Inhofe | | |
| 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 | | Russ Feingold,
Herb Kohl | |
| Wyoming | Mike Enzi,
Craig Thomas | | |