| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $139K | 66 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 1992, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $119K | 39 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 1992, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| SMALL BUSINESS INVESTOR ALLIANCE PAC | $115K | 64 | 2010, 2002, 2024, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $111K | 55 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $109K | 32 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $93K | 47 | 2010, 2002, 1996, 2024, 1994, 2014, 2006, 1992, 2020, 1998, 2016, 2004, 2012, 2018, 2022, 2008, 2000 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $86K | 54 | 2010, 2002, 1994, 2014, 2006, 1992, 1998, 2004, 2012, 2018, 2008, 2000 |
| NATIONAL ROOFING CONTRACTORS ASSOCIATION ROOF PAC | $83K | 65 | 2010, 2002, 2024, 2014, 2006, 2020, 2016, 2004, 2012, 2018, 2022, 2008 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $83K | 34 | 2010, 2002, 1996, 1994, 2006, 1992, 2020, 1998, 2016, 2012, 2018, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $81K | 37 | 2010, 2002, 1996, 2024, 1994, 2006, 2020, 1998, 2016, 2004, 2018, 2008, 2000 |