| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $120K | 28 | 2002, 1996, 2024, 1994, 1992, 1998, 2004, 2000 |
| AFL-CIO | $106K | 4 | 1994, 2006, 1992 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $79K | 21 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| DCCC | $75K | 71 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $74K | 21 | 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $74K | 26 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $73K | 26 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $66K | 18 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| COMMUNICATIONS WORKERS OF AMERICA - COPE POLITICAL CONTRIBUTIONS COMMITTEE | $61K | 19 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |
| AMERICAN ACADEMY OF OPHTHALMOLOGY INC POLITICAL COMMITTEE (OPHTHPAC) | $58K | 20 | 2002, 1996, 1994, 1992, 1998, 2004, 2000 |