| NH | | R | John Sununu | 1 | 100% | 100% | |
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| SC | | R | Jim DeMint | 1 | 100% | 100% | |
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| AZ | | R | Jon Kyl | 1 | 100% | 100% | |
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| NE | | R | Chuck Hagel | 4 | 99% | 99% | |
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| NH | | R | Judd Gregg | 4 | 99% | 99% | |
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| CO | | R | Wayne Allard | 6 | 98% | 98% | |
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| NV | | R | John Ensign | 7 | 94% | 94% | |
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| AL | | R | Jeff Sessions | 8 | 92% | 92% | |
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| OK | | R | Tom Coburn | 9 | 90% | 90% | |
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| TN | | R | William Frist | 10 | 89% | 89% | |
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| KY | | R | Mitch McConnell | 10 | 89% | 89% | |
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| KS | | R | Sam Brownback | 12 | 88% | 88% | |
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| OK | | R | James Inhofe | 13 | 87% | 87% | |
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| GA | | R | Johnny Isakson | 14 | 86% | 86% | |
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| TX | | R | John Cornyn | 15 | 85% | 85% | |
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| GA | | R | Saxby Chambliss | 15 | 85% | 85% | |
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| NC | | R | Richard Burr | 15 | 85% | 85% | |
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| IA | | R | Chuck Grassley | 18 | 84% | 84% | |
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| VA | | R | George Allen | 18 | 84% | 84% | |
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| FL | | R | Mel Martinez | 20 | 82% | 82% | |
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| KY | | R | Jim Bunning | 20 | 82% | 82% | |
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| AK | | R | Lisa Murkowski | 22 | 81% | 81% | |
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| MS | | R | Trent Lott | 23 | 80% | 80% | |
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| TN | | R | Lamar Alexander | 24 | 79% | 79% | |
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| MS | | R | Thad Cochran | 24 | 79% | 79% | |
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| UT | | R | Robert Bennett | 26 | 78% | 78% | |
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| NC | | R | Elizabeth Dole | 27 | 77% | 77% | |
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| WY | | R | Craig Thomas | 27 | 77% | 77% | |
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| AZ | | R | John McCain | 29 | 76% | 76% | |
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| LA | | R | David Vitter | 30 | 76% | 76% | |
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| KS | | R | Pat Roberts | 31 | 76% | 76% | |
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| AK | | R | Ted Stevens | 31 | 76% | 76% | |
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| MO | | R | Christopher Bond | 33 | 74% | 74% | |
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| UT | | R | Orrin Hatch | 33 | 74% | 74% | |
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| PA | | R | Richard Santorum | 35 | 73% | 73% | |
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| AL | | R | Richard Shelby | 35 | 73% | 73% | |
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| TX | | R | Kay Hutchison | 35 | 73% | 73% | |
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| VA | | R | John Warner | 38 | 72% | 72% | |
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| ID | | R | Larry Craig | 38 | 72% | 72% | |
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| SC | | R | Lindsey Graham | 38 | 72% | 72% | |
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| WY | | R | Michael Enzi | 41 | 70% | 70% | |
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| NM | | R | Pete Domenici | 41 | 70% | 70% | |
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| MT | | R | Conrad Burns | 43 | 69% | 69% | |
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| ID | | R | Mike Crapo | 43 | 69% | 69% | |
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| IN | | R | Richard Lugar | 43 | 69% | 69% | |
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| MO | | R | James Talent | 46 | 62% | 62% | |
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| SD | | R | John Thune | 47 | 61% | 61% | |
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| MN | | R | Norm Coleman | 48 | 59% | 59% | |
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| OH | | R | George Voinovich | 49 | 56% | 56% | |
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| PA | | D | Arlen Specter | 50 | 47% | 47% | |
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| OR | | R | Gordon Smith | 51 | 46% | 46% | |
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| OH | | R | Michael DeWine | 52 | 43% | 43% | |
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| NE | | D | E. Benjamin Nelson | 53 | 35% | 35% | |
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| RI | | R | Lincoln Chafee | 54 | 26% | 26% | |
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| ME | | R | Susan Collins | 55 | 22% | 22% | |
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| ME | | R | Olympia Snowe | 56 | 18% | 18% | |
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| WA | | D | Maria Cantwell | 57 | 17% | 17% | |
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| DE | | D | Thomas Carper | 58 | 15% | 15% | |
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| CA | | D | Dianne Feinstein | 59 | 14% | 14% | |
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| LA | | D | Mary Landrieu | 60 | 13% | 13% | |
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| NM | | D | Jeff Bingaman | 60 | 13% | 13% | |
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| MT | | D | Max Baucus | 62 | 12% | 12% | |
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| AR | | D | Blanche Lincoln | 63 | 11% | 11% | |
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| OR | | D | Ron Wyden | 64 | 9% | 9% | |
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| VT | | I | James Jeffords | 65 | 8% | 8% | |
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| FL | | D | Bill Nelson | 66 | 8% | 8% | |
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| WA | | D | Patty Murray | 67 | 7% | 7% | |
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| ND | | D | Kent Conrad | 67 | 7% | 7% | |
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| AR | | D | Mark Pryor | 69 | 6% | 6% | |
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| WI | | D | Russ Feingold | 70 | 5% | 5% | |
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| CO | | D | Ken Salazar | 71 | 3% | 3% | |
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| CT | | D | Joseph Lieberman | 72 | 3% | 3% | |
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| NY | | D | Chuck Schumer | 73 | 2% | 2% | |
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| IN | | D | Evan Bayh | 74 | 2% | 2% | |
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| CT | | D | Christopher Dodd | 74 | 2% | 2% | |
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| RI | | D | Jack Reed | 74 | 2% | 2% | |
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| WV | | D | John Rockefeller | 74 | 2% | 2% | |
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| HI | | D | Daniel Inouye | 78 | 1% | 1% | |
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| HI | | D | Daniel Akaka | 79 | 1% | 1% | |
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| MD | | D | Barbara Mikulski | 80 | 0% | 0% | |
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| NV | | D | Harry Reid | 80 | 0% | 0% | |
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| SD | | D | Tim Johnson | 80 | 0% | 0% | |
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| IA | | D | Tom Harkin | 80 | 0% | 0% | |
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| VT | | D | Patrick Leahy | 80 | 0% | 0% | |
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| IL | | D | Barack Obama | 80 | 0% | 0% | |
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| WI | | D | Herb Kohl | 80 | 0% | 0% | |
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| MA | | D | John Kerry | 80 | 0% | 0% | |
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| MA | | D | Edward Kennedy | 80 | 0% | 0% | |
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| MI | | D | Carl Levin | 80 | 0% | 0% | |
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| ND | | D | Byron Dorgan | 80 | 0% | 0% | |
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| MN | | D | Mark Dayton | 80 | 0% | 0% | |
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| MD | | D | Paul Sarbanes | 80 | 0% | 0% | |
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| IL | | D | Dick Durbin | 80 | 0% | 0% | |
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| WV | | D | Robert Byrd | 80 | 0% | 0% | |
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| NY | | D | Hillary Clinton | 80 | 0% | 0% | |
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| NJ | | D | Jon Corzine | 80 | 0% | 0% | |
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| MI | | D | Debbie Stabenow | 80 | 0% | 0% | |
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| CA | | D | Barbara Boxer | 80 | 0% | 0% | |
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| DE | | D | Joseph Biden | 80 | 0% | 0% | |
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| NJ | | D | Frank Lautenberg | 80 | 0% | 0% | |
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|