| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $84K | 48 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2012, 2008, 1986, 1982, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $82K | 46 | 2010, 1990, 2002, 1996, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 2012, 2008, 1986, 1982, 2000 |
| AMERICAN FUTURE FUND | $82K | 3 | 2010 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $80K | 49 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2012, 2008, 1982, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $77K | 38 | 2010, 1990, 2002, 1996, 2006, 1992, 1984, 1988, 1998, 2004, 2012, 2008, 1986, 1982, 2000 |
| HUMAN RIGHTS CAMPAIGN PAC | $71K | 41 | 2010, 1990, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2012, 2008, 2000 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $67K | 33 | 2010, 1990, 2002, 2006, 1992, 1984, 1988, 1980, 2004, 2012, 2008, 1986, 1982 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $63K | 32 | 2010, 1990, 2002, 1996, 2006, 1992, 1984, 1988, 1980, 2004, 2008, 1986, 1982, 2000 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $57K | 50 | 2010, 1990, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 2008, 1986, 1982, 2000 |
| AMERICAN INSTITUTE OF CERTIFIED PUBLIC ACCOUNTANTS POLITICAL ACTION COMMITTEE | $56K | 37 | 2010, 1990, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2012, 2008, 2000 |