Thomas Harkin
Party: Democrat
Chamber: Senate
State: Iowa
| Year | Grade | Score | Rank |
|---|---|---|---|
| 2014 | F | 4% | 80 |
| 2013 | F | 5% | 93 |
| 2012 | F | 13% | 60 |
| 2011 | F | 9% | 89 |
| 2010 | F | 5% | 88 |
| 2009 | F | 4% | 98 |
| 2008 | F | 4% | 83 |
| 2007 | F | 5% | 93 |
| 2006 | F | 9% | 100 |
| 2005 | F | 7% | 91 |
| 2004 | F | 10% | 94 |
| 2003 | F | 16% | 80 |
| 2002 | F | 19% | 69 |
| 2001 | F | 6% | 89 |
| 2000 | F | 10% | 97 |
| 1999 | F | 6% | 87 |
| 1998 | F | 10% | 94 |
| 1997 | F | 29% | 72 |
| 1996 | D | 42% | 59 |
| 1995 | F | 25% | 69 |
| 1994 | F | 16% | 82 |
| 1993 | F | 18% | 82 |
| 1992 | D | 33% | 61 |