| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $105K | 29 | 2010, 2002, 1996, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $105K | 44 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| SHEET METAL & AIR CONDITIONING CONTRACTORS' NATIONAL ASSOC., INC. POLITICAL ACTION COMMITTEE | $101K | 46 | 2010, 2002, 1996, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| NRCC | $96K | 21 | 1994, 2006, 1992, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $91K | 64 | 2010, 2002, 1996, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $88K | 44 | 2010, 2002, 1996, 1994, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $81K | 69 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $78K | 40 | 2010, 2002, 1996, 1994, 2014, 2006, 2020, 1998, 2016, 2012, 2018, 2008, 2000 |
| INTERNATIONAL ASSOCIATION OF FIREFIGHTERS INTERESTED IN REGISTRATION AND EDUCATION PAC | $77K | 41 | 2010, 2002, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $77K | 30 | 2010, 2002, 1996, 2014, 2006, 2020, 1998, 2016, 2004, 2012, 2018, 2008, 2000 |