| DCCC | $224K | 7 | 2006 |
| NRCC | $124K | 85 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |
| REPUBLICAN NATIONAL COMMITTEE | $107K | 6 | 1996, 1994, 2006, 1992 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $85K | 58 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $79K | 30 | 2002, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $74K | 29 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $68K | 26 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |
| RAYTHEON TECHNOLOGIES CORPORATION PAC (FORMERLY UTC PAC) | $55K | 49 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $53K | 32 | 1990, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2008, 2000 |
| LOCKHEED MARTIN CORPORATION EMPLOYEES' POLITICAL ACTION COMMITTEE | $51K | 35 | 2002, 1996, 2006, 1998, 2004, 2008, 2000 |