| NRCC | $164K | 44 | 1996, 1998, 2000, 2002, 2004, 2006 |
| NATIONAL BEER WHOLESALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $79K | 29 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| NATIONAL RURAL ELECTRIC COOPERATIVE ASSOCIATION AMERICA'S ELECTRIC COOPERATIVES PAC | $73K | 50 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $72K | 31 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $68K | 40 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $68K | 41 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| ANHEUSER-BUSCH COMPANIES LLC POLITICAL ACTION COMMITTEE | $58K | 33 | 1996, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $57K | 34 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $56K | 26 | 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2012 |
| CARPENTERS LEGISLATIVE IMPROVEMENT COMMITTEE UNITED BROTHERHOOD OF CARPENTERS AND JOINERS | $55K | 15 | 2002, 2004, 2006, 2008, 2010, 2012 |