| 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 | 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 | 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 | John Thune | Tim Johnson | | |
| 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 | | | |