| DCCC | $70K | 54 | 2002, 1996, 1994, 1992, 1998, 2000 |
| AFL-CIO | $59K | 14 | 2002, 1996, 2006, 1992, 1998 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $53K | 25 | 2002, 1996, 1994, 2006, 1992, 1998, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $52K | 21 | 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $51K | 14 | 2002, 1996, 1994, 2006, 1992, 1998, 2004 |
| AFLAC POLITICAL ACTION COMMITTEE (AFLAC PAC) | $48K | 14 | 2002, 1996, 1994, 2006, 1998, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $48K | 23 | 2002, 1996, 1994, 1992, 1998, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $47K | 26 | 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $46K | 27 | 2002, 1996, 1994, 2006, 1992, 1998, 2000 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $45K | 24 | 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2000 |