| DCCC | $69K | 68 | 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $66K | 37 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $61K | 33 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| FEDEX CORPORATION POLITICAL ACTION COMMITTEE | $61K | 22 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| BLUE DOG POLITICAL ACTION COMMITTEE | $50K | 11 | 2002, 2006, 2004, 2008, 2000 |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION AMERICA'S ELECTRIC COOPERATIVES PAC | $49K | 44 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $49K | 26 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| WALMART INC. PAC FOR RESPONSIBLE GOVERNMENT | $49K | 23 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $48K | 16 | 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| NATIONAL COMMUNITY PHARMACISTS ASSOCIATION - PAC | $47K | 29 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |