Thomas Coburn
Party: Republican
Chamber: Senate
State: Oklahoma
| Year | Grade | Score | Rank |
|---|---|---|---|
| 2014 | A | 91% | 1 |
| 2013 | A | 96% | 2 |
| 2012 | A | 89% | 6 |
| 2011 | A | 96% | 1 |
| 2010 | A | 96% | 22 |
| 2009 | A | 97% | 1 |
| 2008 | A | 81% | 3 |
| 2007 | A | 89% | 2 |
| 2006 | A | 87% | 10 |
| 2005 | A | 83% | 4 |