| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $90K | 53 | 2010, 1990, 2002, 1996, 1994, 2014, 2006, 1992, 1988, 1998, 2016, 2004, 2012, 2008, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $90K | 50 | 2010, 1990, 2002, 1996, 1994, 2014, 2006, 1992, 1988, 1998, 2016, 2004, 2012, 2008, 2000 |
| SCHERING - PLOUGH CORPORATION BETTER GOVERNMENT FUND | $80K | 28 | 2010, 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2008, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $73K | 25 | 2010, 1990, 2002, 1996, 2014, 2006, 1988, 1998, 2016, 2012, 2008, 2000 |
| INTERNATIONAL BROTHERHOOD OF ELECTRICAL WORKERS POLITICAL ACTION COMMITTEE | $65K | 26 | 2010, 1990, 2002, 1996, 2014, 2006, 1992, 1998, 2016, 2012, 2008, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $65K | 21 | 2010, 1990, 2002, 1996, 1994, 2014, 1992, 1988, 1998, 2012, 2008, 2000 |
| AFLAC POLITICAL ACTION COMMITTEE (AFLAC PAC) | $62K | 31 | 2010, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2016, 2012, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $60K | 50 | 2010, 1990, 2002, 1996, 1994, 2014, 2006, 1992, 1998, 2016, 2004, 2012, 2008, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $58K | 46 | 2010, 1990, 2002, 1996, 1994, 2014, 2006, 1992, 1988, 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 | $55K | 40 | 2010, 1990, 2002, 1996, 1994, 2014, 2006, 1992, 2004, 2012, 2008 |