| DSCC | $2.8M | 17 | 2006 |
| NRSC | $772K | 7 | 2006, 2008 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $246K | 5 | 2006 |
| NATIONAL RIGHT TO LIFE POLITICAL ACTION COMMITTEE | $179K | 53 | 2006, 2008 |
| NATIONAL RIFLE ASSOCIATION OF AMERICA POLITICAL VICTORY FUND | $140K | 26 | 2006, 2012 |
| SAFARI CLUB INTERNATIONAL PAC (SCI-PAC) | $94K | 9 | 2006, 2016, 2018 |
| ASSOCIATED BUILDERS AND CONTRACTORS, INC. POLITICAL ACTION COMMITTEE (ABC PAC) | $65K | 7 | 2006, 2012, 2018 |
| CONSERVATIVE MAJORITY FUND | $50K | 6 | 2018 |
| BLUEGRASS COMMITTEE | $39K | 9 | 2006, 2012, 2018 |
| UBS AMERICAS INC. POLITICAL ACTION COMMITTEE (UBS PAC) | $35K | 7 | 2006, 2012, 2018 |