| NRCC | $3.4M | 77 | 2006, 2004, 2008 |
| DCCC | $1.9M | 128 | 2010, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| TEXAS DEMOCRATIC PARTY | $238K | 25 | 1996, 2006, 1998, 2012, 2008 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $85K | 33 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| UNITED FOOD AND COMMERCIAL WORKERS INTERNATIONAL UNION ACTIVE BALLOT CLUB | $84K | 32 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| UNITED STEELWORKERS POLITICAL ACTION FUND | $83K | 17 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| COMMUNICATIONS WORKERS OF AMERICA - COPE POLITICAL CONTRIBUTIONS COMMITTEE | $81K | 27 | 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 | $81K | 29 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $80K | 28 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF TEACHERS, AFL-CIO COMMITTEE ON POLITICAL EDUCATION | $79K | 25 | 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |