| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $114K | 66 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $108K | 34 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $101K | 60 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $91K | 49 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN POSTAL WORKERS UNION COMMITTEE ON POLITICAL ACTION | $88K | 41 | 2010, 2002, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $81K | 34 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $81K | 36 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| SEAFARERS POLITICAL ACTIVITY DONATION - SEAFARERS INTERNATIONAL UNION OF NA-AGLIW | $80K | 35 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMALGAMATED TRANSIT UNION - COPE | $76K | 49 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $76K | 32 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008 |