| NRCC | $362K | 82 | 2010, 2002, 2006, 2004, 2008 |
| AMERICAN ACADEMY OF OPHTHALMOLOGY INC POLITICAL COMMITTEE (OPHTHPAC) | $225K | 25 | 2010, 2002, 2006, 2004, 2012, 2008 |
| AMERICAN SOCIETY OF ANESTHESIOLOGISTS POLITICAL ACTION COMMITTEE (ASA PAC) | $85K | 28 | 2010, 2002, 2006, 2004, 2012, 2008 |
| REPUBLICAN NATIONAL COMMITTEE | $81K | 3 | 2002 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $60K | 20 | 2010, 2002, 2006, 2004, 2012, 2008 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $55K | 28 | 2010, 2002, 2006, 2004, 2012, 2008 |
| THE WILLIAMS COMPANIES, INC. POLITICAL ACTION COMMITTEE | $54K | 44 | 2010, 2002, 2006, 2004, 2012, 2008 |
| ASSOCIATED BUILDERS AND CONTRACTORS, INC. POLITICAL ACTION COMMITTEE (ABC PAC) | $46K | 17 | 2010, 2002, 2006, 2004, 2012, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $45K | 23 | 2010, 2002, 2006, 2004, 2012, 2008 |
| AMERICAN DENTAL ASSOCIATION POLITICAL ACTION COMMITTEE | $44K | 25 | 2010, 2002, 2006, 2004, 2012, 2008 |