| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $82K | 32 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $78K | 40 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $74K | 36 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $69K | 28 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $69K | 32 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $66K | 26 | 2010, 2002, 1996, 2006, 1998, 2004, 2008, 2000 |
| JESSE JACKSON JR FOR CONGRESS | $60K | 1 | 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $55K | 41 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $52K | 32 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $50K | 34 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |