| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $163K | 27 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| DCCC | $140K | 115 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $71K | 29 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $67K | 28 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $63K | 16 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $63K | 24 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $60K | 20 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| UNITED PARCEL SERVICE, INC. PAC (UPSPAC) | $56K | 28 | 2010, 2002, 2006, 2004, 2008, 2000 |
| COMMUNICATIONS WORKERS OF AMERICA - COPE POLITICAL CONTRIBUTIONS COMMITTEE | $55K | 18 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| UAW - V - CAP (UAW VOLUNTARY COMMUNITY ACTION PROGRAM) 'INT'L UNION UNITED AUTOMOBILE AEROSPACE & AGRICULTURAL IMPLEMENT WORKERS OF AMERICA UAW | $53K | 28 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |