| DCCC | $133K | 86 | 1990, 2002, 1996, 1994, 1992, 1988, 1998, 2004, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $122K | 37 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| UNITED MINE WORKERS OF AMERICA - COAL MINERS POLITICAL ACTION COMMITTEE | $108K | 66 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $108K | 42 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $102K | 47 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $99K | 45 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $97K | 34 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $96K | 57 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $93K | 42 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| UNITED STEELWORKERS POLITICAL ACTION FUND | $86K | 24 | 2010, 1990, 2002, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |