| DCCC | $1.2M | 36 | 2006, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS | $98K | 9 | 2002, 2006, 2008 |
| AMERICAN SOCIETY OF ANESTHESIOLOGISTS POLITICAL ACTION COMMITTEE (ASA PAC) | $87K | 18 | 2002, 2006, 2004, 2008, 2000 |
| REPUBLICAN NATIONAL COMMITTEE | $86K | 2 | 2008, 2000 |
| NRCC | $79K | 58 | 2002, 2006, 2004, 2008, 2000 |
| POLITICAL ACTION COMMITTEE OF THE AMERICAN ASSOCIATION OF ORTHOPAEDIC SURGEONS--PAC OF AAOS | $59K | 10 | 2002, 2006, 2004, 2008 |
| NATIONAL EMERGENCY MEDICINE POLITICAL ACTION COMMITTEE / AMERICAN COLLEGE OF EMERGENCY PHYSICIANS | $55K | 5 | 2004, 2008 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $51K | 32 | 2002, 2006, 2016, 2004, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $50K | 26 | 2002, 2014, 2006, 2004, 2012, 2008, 2000 |
| ABBOTT LABORATORIES EMPLOYEE POLITICAL ACTION COMMITTEE | $49K | 18 | 2002, 2006, 2004, 2012, 2008, 2000 |