| NRSC | $169K | 26 | 1996, 1994, 2006, 2000 |
| REPUBLICAN NATIONAL COMMITTEE | $52K | 2 | 2002, 2000 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $51K | 17 | 2010, 1994, 2006, 1998, 2004, 2000 |
| UNION PACIFIC CORP. FUND FOR EFFECTIVE GOVERNMENT | $35K | 18 | 2010, 1994, 2006, 2004, 2000 |
| AMERICAN MARITIME OFFICERS VOLUNTARY POLITICAL ACTION FUND | $31K | 22 | 2010, 1994, 2006, 1998, 2004, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $29K | 18 | 2010, 1994, 2006, 1998, 2000 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $29K | 9 | 1994, 2006, 2000 |
| AMERICAN HEALTH CARE ASSOCIATION POLITICAL ACTION COMMITTEE | $29K | 17 | 2010, 1994, 2006, 2000 |
| AMERICA'S CREDIT UNIONS PAC OF CREDIT UNION NATIONAL ASSOCIATION, INC. | $28K | 15 | 2010, 1994, 2006, 1998, 2000 |
| BANK OF AMERICA CORPORATION PAC (FKA MBNA CORPORATION FEDERAL POLITICAL COMMITTEE) | $27K | 8 | 1994, 2006, 1998, 2000 |