| NRCC | $79K | 49 | 2002, 2004, 2012, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $58K | 21 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| EXELON CORPORATION POLITICAL ACTION COMMITTEE | $52K | 36 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $47K | 23 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $44K | 31 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $41K | 18 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $40K | 16 | 2010, 2002, 2006, 2004, 2012, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $36K | 20 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $31K | 13 | 2010, 2002, 2006, 2004, 2008, 2000 |
| NATIONAL AIR TRAFFIC CONTROLLERS ASSOCIATION PAC | $30K | 23 | 2010, 2006, 2004, 2012, 2008 |