| NRCC | $106K | 101 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $93K | 53 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $69K | 50 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $61K | 46 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $59K | 28 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $58K | 43 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL MULTIFAMILY HOUSING COUNCIL POLITICAL ACTION COMMITTEE | $56K | 31 | 2010, 1990, 2002, 2006, 1992, 2004, 2012, 2008 |
| NCTA - THE INTERNET & TELEVISION ASSOCIATION POLITICAL ACTION COMMITTEE (NCTAPAC) | $55K | 21 | 2010, 1990, 2002, 1996, 2006, 1992, 2004, 2012, 2008, 2000 |
| NATIONAL ASSOCIATION OF BROADCASTERS POLITICAL ACTION COMMITTEE (NABPAC) | $51K | 45 | 2010, 2002, 1996, 1994, 2006, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL RIFLE ASSOCIATION OF AMERICA POLITICAL VICTORY FUND | $49K | 45 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |