| DCCC | $109K | 111 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $70K | 34 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $68K | 17 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| MGM RESORTS INTERNATIONAL PAC | $65K | 22 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $65K | 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 | $65K | 40 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $63K | 33 | 2010, 2002, 2006, 2004, 2008, 2000 |
| INTERNATIONAL ASSOCIATION OF SHEET METAL, AIR, RAIL AND TRANSPORTATION WORKERS POLITICAL ACTION LEAGUE | $63K | 21 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $60K | 30 | 2010, 2002, 2006, 1998, 2004, 2012, 2008, 2000 |
| INTERNATIONAL UNION OF PAINTERS AND ALLIED TRADES POLITICAL ACTION TOGETHER POLITICAL COMMITTEE | $60K | 18 | 2010, 2002, 2006, 1998, 2004, 2008, 2000 |