| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $155K | 46 | 2010, 2002, 1996, 2024, 2014, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $129K | 36 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $120K | 57 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $119K | 44 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $118K | 60 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $113K | 24 | 2010, 2002, 1996, 2024, 1994, 2014, 2020, 1998, 2016, 2012, 2018, 2022, 2008, 2000 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $106K | 40 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $104K | 55 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $99K | 48 | 2010, 2002, 1996, 2024, 1994, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $88K | 49 | 2010, 2002, 1996, 1994, 2014, 2006, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |