| SC | | R | Jim DeMint | 1 | 100% | 100% | |
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| OK | | R | Tom Coburn | 1 | 100% | 96% | |
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| OK | | R | James Inhofe | 1 | 100% | 93% | |
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| AL | | R | Jeff Sessions | 1 | 100% | 85% | |
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| GA | | R | Saxby Chambliss | 1 | 100% | 85% | |
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| AZ | | R | John McCain | 1 | 100% | 80% | |
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| NV | | R | John Ensign | 7 | 99% | 93% | |
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| WY | | R | John Barrasso | 7 | 99% | 91% | |
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| WY | | R | Michael Enzi | 7 | 99% | 89% | |
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| GA | | R | Johnny Isakson | 7 | 99% | 81% | |
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| SD | | R | John Thune | 7 | 99% | 79% | |
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| KY | | R | Jim Bunning | 12 | 96% | 89% | |
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| NC | | R | Richard Burr | 13 | 96% | 86% | |
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| KY | | R | Mitch McConnell | 14 | 95% | 84% | |
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| TX | | R | John Cornyn | 15 | 94% | 86% | |
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| AZ | | R | Jon Kyl | 16 | 94% | 94% | |
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| ID | | R | Jim Risch | 16 | 94% | 94% | |
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| NE | | R | Mike Johanns | 18 | 93% | 93% | |
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| KS | | R | Pat Roberts | 19 | 93% | 72% | |
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| MS | | R | Roger Wicker | 20 | 92% | 70% | |
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| IA | | R | Chuck Grassley | 21 | 91% | 76% | |
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| LA | | R | David Vitter | 22 | 90% | 83% | |
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| UT | | R | Orrin Hatch | 23 | 88% | 70% | |
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| KS | | R | Sam Brownback | 24 | 85% | 85% | |
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| MO | | R | Christopher Bond | 25 | 84% | 64% | |
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| TN | | R | Bob Corker | 26 | 84% | 72% | |
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| MS | | R | Thad Cochran | 26 | 84% | 70% | |
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| ID | | R | Mike Crapo | 28 | 83% | 77% | |
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| AL | | R | Richard Shelby | 28 | 83% | 72% | |
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| AK | | R | Lisa Murkowski | 30 | 82% | 62% | |
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| SC | | R | Lindsey Graham | 31 | 81% | 74% | |
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| TX | | R | Kay Hutchison | 31 | 81% | 69% | |
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| UT | | R | Robert Bennett | 33 | 79% | 74% | |
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| IN | | R | Richard Lugar | 34 | 76% | 61% | |
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| OH | | R | George Voinovich | 35 | 73% | 51% | |
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| FL | | R | Mel Martinez | 36 | 72% | 71% | |
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| NH | | R | Judd Gregg | 37 | 72% | 82% | |
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| TN | | R | Lamar Alexander | 38 | 64% | 67% | |
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| ME | | R | Susan Collins | 39 | 60% | 32% | |
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| ME | | R | Olympia Snowe | 40 | 53% | 21% | |
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| PA | | R | Arlen Specter | 41 | 30% | 39% | |
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| NE | | D | Ben Nelson | 41 | 30% | 28% | |
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| IN | | D | Evan Bayh | 43 | 28% | 10% | |
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| WV | | D | Robert Byrd | 44 | 22% | 8% | |
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| AR | | D | Blanche Lincoln | 45 | 20% | 13% | |
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| MT | | D | Jon Tester | 46 | 19% | 18% | |
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| ND | | D | Byron Dorgan | 47 | 18% | 10% | |
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| WI | | D | Russ Feingold | 48 | 18% | 9% | |
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| MO | | D | Claire McCaskill | 49 | 17% | 15% | |
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| WA | | D | Maria Cantwell | 50 | 15% | 14% | |
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| LA | | D | Mary Landrieu | 51 | 14% | 18% | |
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| MT | | D | Max Baucus | 52 | 14% | 14% | |
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| AR | | D | Mark Pryor | 52 | 14% | 12% | |
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| VA | | R | John Warner | 54 | 13% | 44% | |
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| OR | | D | Ron Wyden | 54 | 13% | 10% | |
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| CT | | I | Joseph Lieberman | 56 | 12% | 60% | |
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| CO | | D | Michael Bennet | 57 | 11% | 11% | |
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| NM | | D | Jeff Bingaman | 58 | 11% | 8% | |
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| FL | | D | Bill Nelson | 59 | 10% | 13% | |
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| ND | | D | Kent Conrad | 59 | 10% | 9% | |
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| VA | | D | Jim Webb | 59 | 10% | 9% | |
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| WI | | D | Herb Kohl | 59 | 10% | 7% | |
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| WA | | D | Patty Murray | 63 | 9% | 7% | |
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| NH | | D | Jeanne Shaheen | 64 | 9% | 9% | |
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| SD | | D | Tim Johnson | 65 | 8% | 13% | |
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| DE | | D | Thomas Carper | 65 | 8% | 10% | |
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| MN | | D | Amy Klobuchar | 65 | 8% | 6% | |
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| VT | | I | Bernie Sanders | 66 | 6% | 7% | |
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| AK | | D | Mark Begich | 66 | 6% | 6% | |
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| NC | | D | Kay Hagan | 66 | 6% | 6% | |
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| VT | | D | Patrick Leahy | 67 | 5% | 3% | |
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| NY | | D | Kirsten Gillibrand | 68 | 3% | 7% | |
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| DE | | D | Edward Kaufman | 69 | 3% | 3% | |
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| WV | | D | John Rockefeller | 70 | 3% | 4% | |
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| MD | | D | Barbara Mikulski | 71 | 3% | 3% | |
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| CO | | D | Mark Udall | 72 | 3% | 8% | |
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| NV | | D | Harry Reid | 72 | 3% | 7% | |
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| CA | | D | Dianne Feinstein | 72 | 3% | 7% | |
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| MD | | D | Benjamin Cardin | 72 | 3% | 6% | |
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| NM | | D | Tom Udall | 72 | 3% | 6% | |
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| RI | | D | Jack Reed | 72 | 3% | 5% | |
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| MI | | D | Debbie Stabenow | 72 | 3% | 5% | |
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| NJ | | D | Frank Lautenberg | 72 | 3% | 4% | |
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| MI | | D | Carl Levin | 72 | 3% | 4% | |
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| HI | | D | Daniel Inouye | 72 | 3% | 4% | |
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| IL | | D | Roland Burris | 72 | 3% | 3% | |
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| HI | | D | Daniel Akaka | 72 | 3% | 3% | |
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| NJ | | D | Robert Menendez | 72 | 3% | 3% | |
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| CT | | D | Christopher Dodd | 72 | 3% | 3% | |
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| MA | | D | John Kerry | 72 | 3% | 3% | |
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| CA | | D | Barbara Boxer | 72 | 3% | 3% | |
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| PA | | D | Bob Casey | 72 | 3% | 2% | |
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| IL | | D | Richard Durbin | 72 | 3% | 2% | |
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| IA | | D | Tom Harkin | 72 | 3% | 1% | |
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| RI | | D | Sheldon Whitehouse | 100 | 0% | 6% | |
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| OH | | D | Sherrod Brown | 100 | 0% | 4% | |
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| NY | | D | Chuck Schumer | 100 | 0% | 2% | |
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| OR | | D | Jeff Merkley | 100 | 0% | 0% | |
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| MA | | D | Paul Kirk | n.a. | n.a. | n.a. | |
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| MN | | D | Al Franken | n.a. | n.a. | n.a. | |
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| FL | | R | George LeMieux | n.a. | n.a. | n.a. | |
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| MA | | D | Edward Kennedy | n.a. | n.a. | 4% | |
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