| NRCC | $63K | 325 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 2004, 1986, 2000 |
| CORNING INCORPORATED EMPLOYEES POLITICAL ACTION COMMITTEE (COREPAC) | $60K | 26 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 2004, 1986, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $48K | 38 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |
| CITICORP VOLUNTARY POLITICAL FUND FEDERAL | $42K | 21 | 1990, 1996, 1994, 1992, 1988, 1998, 1986, 2000 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $36K | 16 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 1986 |
| NATIONAL VENTURE CAPITAL ASSOCIATION VENTUREPAC | $34K | 21 | 2002, 1996, 1998, 2004, 2000 |
| THE NORTHWESTERN MUTUAL LIFE INSURANCE COMPANY POLITICAL ACTION COMMITTEE (NMPAC) | $31K | 21 | 2002, 1996, 1994, 1998, 2004, 2000 |
| AMERICAN INSTITUTE OF CERTIFIED PUBLIC ACCOUNTANTS POLITICAL ACTION COMMITTEE | $28K | 12 | 2002, 1996, 1994, 1988, 1998, 2004, 1986 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $27K | 25 | 2002, 1996, 1994, 1998, 2004, 2000 |
| AMERICAN DENTAL ASSOCIATION POLITICAL ACTION COMMITTEE | $25K | 26 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 2004, 1986, 2000 |