| NRCC | $98K | 20 | 2004, 2006, 2008 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $53K | 12 | 2002, 2004, 2006, 2008, 2010, 2012, 2014 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $52K | 22 | 2002, 2004, 2006, 2008, 2010, 2012, 2014 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $48K | 17 | 2004, 2006, 2008, 2010, 2012, 2014 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $43K | 19 | 2002, 2004, 2006, 2008, 2010, 2012 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $38K | 15 | 2002, 2004, 2006, 2008, 2010, 2012 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $37K | 16 | 2002, 2004 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $37K | 26 | 2004, 2006, 2008, 2010, 2012, 2014 |
| ARPAC | $37K | 24 | 2002, 2004, 2006, 2008, 2010, 2012, 2014 |
| EVERY REPUBLICAN IS CRUCIAL (ERICPAC) | $35K | 7 | 2004, 2006, 2008, 2010, 2012 |