| DSCC | $278K | 16 | 1992, 1986 |
| AFL-CIO | $43K | 6 | 1992, 1998, 1986 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $32K | 18 | 1992, 1988, 1998, 2004, 1986 |
| SEAFARERS POLITICAL ACTIVITY DONATION - SEAFARERS INTERNATIONAL UNION OF NA-AGLIW | $31K | 10 | 1992, 1998, 2004, 1986 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $29K | 9 | 1992, 1988, 1998, 1986 |
| NATIONAL FISHERIES INSTITUTE (FISHPAC) | $29K | 11 | 1992, 1988, 1998, 2004, 1986 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $27K | 7 | 1992, 1988, 1998, 2004, 1986 |
| NATIONAL ASSOCIATION OF INSURANCE AND FINANCIAL ADVISORS POLITICAL ACTION COMM | $27K | 10 | 1994, 1992, 1998, 1986 |
| NATIONAL ASSOCIATION OF LETTER CARRIERS OF U.S.A. POLITICAL FUND (LETTER CARRIER POLITICAL FUND) | $26K | 9 | 1992, 1998, 1986 |
| OCCIDENTAL PETROLEUM CORPORATION POLITICAL ACTION COMMITTEE | $26K | 13 | 1992, 1998, 2004, 1986 |