| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $58K | 28 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $43K | 27 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $36K | 25 | 1996, 1998, 2000, 2002, 2004, 2006 |
| SEIU COPE (SERVICE EMPLOYEES INTERNATIONAL UNION COMMITTEE ON POLITICAL EDUCATION) | $32K | 12 | 1996, 1998, 2000, 2002, 2004, 2006 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $32K | 10 | 1998, 2000, 2002, 2004, 2006 |
| AIR LINE PILOTS ASSOCIATION PAC | $31K | 18 | 1996, 1998, 2000, 2002, 2004, 2006, 2008 |
| D.R.I.V.E. - DEM, REP, IND VOTER ED (THE PAC OF THE INT'L BRHD OF TEAMSTERS) | $29K | 18 | 1996, 1998, 2000, 2002, 2004, 2006 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $29K | 12 | 1998, 2000, 2002, 2004, 2006, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $29K | 24 | 1998, 2000, 2002, 2004, 2006, 2008 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $23K | 16 | 1996, 1998, 2000, 2002, 2004, 2006 |