| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $183K | 77 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $148K | 52 | 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 | $119K | 67 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $115K | 37 | 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| INTERNATIONAL ASSOCIATION OF FIREFIGHTERS INTERESTED IN REGISTRATION AND EDUCATION PAC | $113K | 58 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $111K | 47 | 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) | $110K | 34 | 2010, 2002, 1996, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $108K | 76 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| NATIONAL AIR TRAFFIC CONTROLLERS ASSOCIATION PAC | $108K | 99 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $108K | 63 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |