| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $2.8M | 103 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| NRCC | $1.6M | 26 | 2010, 2008 |
| DCCC | $806K | 84 | 2010, 1990, 2002, 1996, 1994, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| THE 60 PLUS ASSOCIATION | $471K | 4 | 2010 |
| AMERICA'S CREDIT UNIONS PAC OF CREDIT UNION NATIONAL ASSOCIATION, INC. | $104K | 51 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 2000 |
| NATIONAL ASSOCIATION OF INSURANCE AND FINANCIAL ADVISORS POLITICAL ACTION COMM | $102K | 51 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $101K | 55 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $100K | 43 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| NATIONAL ASSOCIATION OF REALTORS | $98K | 14 | 2010, 2002, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $97K | 40 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |