| NRCC | $66K | 19 | 1996, 1998, 2002, 2004, 2006 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $62K | 30 | 1998, 2000, 2002, 2004, 2006, 2008 |
| NCTA - THE INTERNET & TELEVISION ASSOCIATION POLITICAL ACTION COMMITTEE (NCTAPAC) | $53K | 14 | 1998, 2000, 2002, 2004, 2006, 2008 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $51K | 21 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $45K | 10 | 2002, 2004, 2006, 2008 |
| NATIONAL ASSOCIATION OF CONVENIENCE STORES POLITICAL ACTION COMMITTEE | $41K | 18 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $35K | 13 | 1998, 2000, 2002, 2004, 2006, 2008 |
| NATIONAL RIFLE ASSOCIATION OF AMERICA POLITICAL VICTORY FUND | $34K | 25 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| AT&T CORP POLITICAL ACTION COMMITTEE | $32K | 26 | 1998, 2000, 2002, 2004, 2006 |
| NATIONAL RESTAURANT ASSOCIATION PAC (RESTAURANT PAC) | $32K | 19 | 1998, 2002, 2004, 2006, 2008 |