| AMERICAN PRINCIPLES PROJECT PAC | $205K | 1 | 2024 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $74K | 25 | 2010, 2002, 2006, 1998, 2016, 2004, 2018, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $73K | 29 | 2010, 2002, 2006, 1998, 2004, 2012, 2018, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $68K | 16 | 2010, 2002, 2006, 1998, 2004, 2018, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $67K | 21 | 2010, 2002, 2006, 1998, 2016, 2004, 2008, 2000 |
| HUMAN RIGHTS CAMPAIGN PAC | $63K | 51 | 2010, 2002, 2006, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $62K | 23 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $60K | 20 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $57K | 19 | 2010, 2002, 2006, 1998, 2004, 2012, 2008, 2000 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $55K | 15 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |