| NATIONAL ASSOCIATION OF LETTER CARRIERS OF U.S.A. POLITICAL FUND (LETTER CARRIER POLITICAL FUND) | $67K | 21 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $65K | 34 | 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| UNITED POSTMASTERS AND MANAGERS OF AMERICA POLITICAL FUND | $55K | 30 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $55K | 23 | 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| NATIONAL STAR ROUTE MAIL CONTRACTORS ASSOCIATION POLITICAL ACTION COMMITTEE | $45K | 36 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| NATIONAL RURAL LETTER CARRIERS' ASSOCIATION POLITICAL ACTION COMMITTEE | $44K | 28 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $37K | 24 | 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $36K | 28 | 1992, 1998, 2000, 2002, 2004, 2006, 2008, 2010 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $36K | 24 | 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| LOCKHEED MARTIN CORPORATION EMPLOYEES' POLITICAL ACTION COMMITTEE | $33K | 19 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |