| State | Office | Name | Party | Rating |
|---|---|---|---|---|
| AL | U.S. Senate-Sr | Richard Shelby | R | 0% |
| AL | U.S. Senate-Jr | Jeff Sessions III | R | 0% |
| AR | U.S. Senate-Sr | Mark Pryor | D | 60% |
| AZ | U.S. Senate-Sr | John McCain III | R | 0% |
| CA | U.S. Senate-Sr | Dianne Feinstein | D | 100% |
| CA | U.S. Senate-Jr | Barbara Boxer | D | 100% |
| DE | U.S. Senate-Sr | Tom Carper | D | 100% |
| FL | U.S. Senate-Sr | William Nelson, Sr. | D | 100% |
| GA | U.S. Senate-Sr | Saxby Chambliss | R | 0% |
| GA | U.S. Senate-Jr | Johnny Isakson | R | 0% |
| IA | U.S. Senate-Sr | Chuck Grassley | R | 0% |
| IA | U.S. Senate-Jr | Tom Harkin | D | 100% |
| ID | U.S. Senate-Sr | Mike Crapo | R | 0% |
| IL | U.S. Senate-Sr | Dick Durbin | D | 100% |
| KS | U.S. Senate-Sr | Pat Roberts | R | 0% |
| KS | Governor | Sam Brownback | R | 0% |
| KY | U.S. Senate-Sr | Mitch McConnell | R | 0% |
| LA | U.S. Senate-Sr | Mary Landrieu | D | 20% |
| LA | U.S. Senate-Jr | David Vitter | R | 0% |
| MD | U.S. Senate-Sr | Barbara Mikulski | D | 100% |
| MD | U.S. Senate-Jr | Ben Cardin | D | 100% |
| ME | U.S. Senate-Sr | Susan Collins | R | 100% |
| MI | U.S. Senate-Sr | Carl Levin | D | 100% |
| MI | U.S. Senate-Jr | Debbie Stabenow | D | 100% |
| MN | U.S. Senate-Sr | Amy Klobuchar | DFL | 100% |
| MO | U.S. Senate-Sr | Claire McCaskill | D | 100% |
| MS | U.S. Senate-Sr | Thad Cochran | R | 40% |
| MS | U.S. Senate-Jr | Roger Wicker | R | 0% |
| MT | U.S. Senate-Sr | Max Baucus | D | 100% |
| MT | U.S. Senate-Jr | Jon Tester | D | 100% |
| NA | U.S. Secretary of State | John Kerry | D | 100% |
| NC | U.S. Senate-Sr | Richard Burr | R | 0% |
| NJ | U.S. Senate-Sr | Bob Menendez | D | 100% |
| NV | U.S. Senate-Sr | Harry Reid | D | 20% |
| NY | U.S. Senate-Sr | Chuck Schumer | D | 100% |
| OH | U.S. Senate-Sr | Sherrod Brown | D | 100% |
| OK | U.S. Senate-Sr | Jim Inhofe | R | 0% |
| OK | U.S. Senate-Jr | Thomas Coburn | R | 0% |
| OR | U.S. Senate-Sr | Ron Wyden | D | 100% |
| PA | U.S. Senate-Sr | Bob Casey, Jr. | D | 0% |
| RI | U.S. Senate-Sr | Jack Reed | D | 100% |
| RI | U.S. Senate-Jr | Sheldon Whitehouse | D | 100% |
| SC | U.S. Senate-Sr | Lindsey Graham | R | 0% |
| SD | U.S. Senate-Sr | Timothy Johnson | D | 20% |
| SD | U.S. Senate-Jr | John Thune | R | 0% |
| TN | U.S. Senate-Sr | Lamar Alexander | R | 0% |
| TN | U.S. Senate-Jr | Robert Corker | R | 0% |
| TX | U.S. Senate-Sr | John Cornyn | R | 0% |
| UT | U.S. Senate-Sr | Orrin Hatch | R | 0% |
| VT | U.S. Senate-Sr | Patrick Leahy | D | 100% |
| VT | U.S. Senate-Jr | Bernie Sanders | I | 100% |
| WA | U.S. Senate-Sr | Patty Murray | D | 100% |
| WA | U.S. Senate-Jr | Maria Cantwell | D | 100% |
| WV | U.S. Senate-Sr | Jay Rockefeller IV | D | 100% |
| WY | U.S. Senate-Sr | Mike Enzi | R | 0% |
| WY | U.S. Senate-Jr | John Barrasso | R | 0% |
| Daniel Akaka, Sr. | Other | 100% | ||
| Evan Bayh | Other | 60% | ||
| Bob Bennett | Other | 0% | ||
| Jeff Bingaman | Other | 100% | ||
| Kit Bond | Other | 0% | ||
| Jim Bunning | Other | 0% | ||
| Robert Byrd | Other | 20% | ||
| Kent Conrad | Other | 100% | ||
| James DeMint | Other | 0% | ||
| Chris Dodd | Other | 100% | ||
| Byron Dorgan | Other | 100% | ||
| John Ensign | Other | 0% | ||
| Russ Feingold | Other | 100% | ||
| Judd Gregg | Other | 0% | ||
| Kay Hutchison | Other | 0% | ||
| Daniel Inouye | Other | 100% | ||
| Edward Kennedy, Sr. | Other | 100% | ||
| Herb Kohl | Other | 100% | ||
| Jon Kyl | Other | 0% | ||
| Frank Lautenberg | Other | 100% | ||
| Joe Lieberman | Other | 100% | ||
| Blanche Lincoln | Other | 100% | ||
| Dick Lugar | Other | 0% | ||
| Melquiades Martinez | Other | 0% | ||
| Ben Nelson | Other | 0% | ||
| Olympia Snowe | Other | 100% | ||
| Arlen Specter | Other | 100% | ||
| George Voinovich | Other | 0% |
How to Interpret these Evaluations
Keep in mind that ratings done by special interest groups often do not represent a non-partisan stance. In addition, some groups select votes that tend to favor members of one political party over another, rather than choosing votes based solely on issues concerns. Nevertheless, they can be invaluable in showing where an incumbent has stood on a series of votes in the past one or two years, especially when ratings by groups on all sides of an issue are compared. Website links, if available, and descriptions of the organizations offering performance evaluations are accessible by clicking on the name of the group.
Most performance evaluations are displayed in a percentage format. However, some organizations present their ratings in the form of a letter grade or endorsement based on voting records, interviews, survey results and/or sources of campaign funding. For consistency and ease in understanding, Project Vote Smart converts all scores into a percentage when possible. Please visit the group's website or call 1-888-VOTESMART for more specific information.