| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $81K | 38 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $73K | 34 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $72K | 51 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $70K | 45 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $57K | 57 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $53K | 38 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $49K | 32 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 2000 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $48K | 44 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| AIRCRAFT OWNERS AND PILOTS ASSOCIATION POLITICAL ACTION COMMITTEE | $45K | 23 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 2004, 1986, 1982, 2000 |
| SMART TD PAC | $44K | 51 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |