| NRCC | $122K | 83 | 1988, 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006 |
| REPUBLICAN NATIONAL COMMITTEE | $107K | 6 | 1992, 1994, 1996, 2006 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $85K | 58 | 1988, 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $74K | 29 | 1988, 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $68K | 26 | 1988, 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| RAYTHEON TECHNOLOGIES CORPORATION PAC (FORMERLY UTC PAC) | $55K | 49 | 1988, 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $53K | 32 | 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| LOCKHEED MARTIN CORPORATION EMPLOYEES' POLITICAL ACTION COMMITTEE | $51K | 35 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $46K | 23 | 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| UNITED PARCEL SERVICE, INC. PAC (UPSPAC) | $43K | 55 | 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |