| DCCC | $201K | 75 | 2002, 1996, 1994, 1992, 1998, 2004, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $111K | 30 | 2010, 2002, 1996, 1994, 2014, 2006, 1998, 2016, 2004, 2012, 2008, 2000 |
| SMART TD PAC | $96K | 45 | 2010, 2002, 1996, 1994, 2014, 1992, 1998, 2016, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $93K | 51 | 2010, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2016, 2004, 2012, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $90K | 50 | 2010, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2016, 2004, 2012, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $87K | 42 | 2010, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2004, 2012, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $81K | 38 | 2010, 2002, 1996, 1994, 2014, 2006, 1998, 2016, 2004, 2008, 2000 |
| INTERNATIONAL LONGSHOREMEN'S ASSOCIATION COMMITTEE ON POLITICAL EDUCATION | $81K | 27 | 2010, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2016, 2004, 2012, 2008, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $72K | 49 | 2010, 2002, 1996, 1994, 2006, 1992, 1998, 2016, 2004, 2008, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $68K | 31 | 2010, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2012, 2008, 2000 |