| NRCC | $160K | 44 | 2010, 1990, 2002, 2006, 1988, 2004, 2008, 2000 |
| INDIANA REPUBLICAN STATE COMMITTEE, INC. | $113K | 8 | 1990, 2006, 2008, 2000 |
| NATIONAL ASSOCIATION OF CONVENIENCE STORES POLITICAL ACTION COMMITTEE | $61K | 21 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| ASSOCIATED BUILDERS AND CONTRACTORS, INC. POLITICAL ACTION COMMITTEE (ABC PAC) | $58K | 17 | 2010, 2002, 2006, 2004, 2008, 2000 |
| AMERICA'S CREDIT UNIONS PAC OF CREDIT UNION NATIONAL ASSOCIATION, INC. | $55K | 24 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| AT&T INC. EMPLOYEE FEDERAL POLITICAL ACTION COMMITTEE (AT&T EMPLOYEE FEDERAL PAC) | $53K | 31 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| ELI LILLY AND COMPANY POLITICAL ACTION COMMITTEE | $50K | 23 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $47K | 25 | 2010, 2002, 2006, 2004, 2008, 2000 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $47K | 20 | 2010, 2002, 2006, 2004, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $37K | 21 | 2010, 2002, 2006, 2004, 2012, 2008, 2000 |