| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $70K | 47 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 2008, 1986, 2000 |
| MACHINISTS NON PARTISAN POLITICAL LEAGUE OF THE INTERNATIONAL ASSOCIATION OF MACHINISTS & AEROSPACE WORKERS | $66K | 35 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 2008, 1986, 1982, 2000 |
| NEA FUND FOR CHILDREN AND PUBLIC EDUCATION | $57K | 45 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 1980, 2004, 1986, 1982, 2000 |
| D.R.I.V.E. - DEMOCRAT, REPUBLICAN, INDEPENDENT VOTER EDUCATION (THE PAC OF THE INTERNATIONAL BROTHERHOOD OF TEAMSTERS) | $53K | 24 | 1990, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 1982, 2000 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $44K | 28 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 1986, 1982, 2000 |
| ALBANIAN AMERICAN PUBLIC AFFAIRS COMMITTEE | $41K | 9 | 2002, 2006, 1998, 2004 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $39K | 25 | 2002, 1996, 1994, 2006, 1992, 1988, 1998, 1980, 2004, 2008, 1986, 1982, 2000 |
| AMERICAN FEDERATION OF STATE COUNTY & MUNICIPAL EMPLOYEES P E O P L E | $36K | 31 | 1990, 2002, 1994, 2006, 1992, 1984, 1988, 1998, 2004, 1986, 1982, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $34K | 27 | 1990, 2002, 1996, 1994, 2006, 1992, 1984, 1988, 1998, 2008, 1986, 1982, 2000 |
| NATIONAL ACTIVE AND RETIRED FEDERAL EMPLOYEES ASSOCIATION POLITICAL ACTION COM (NARFE-PAC) | $33K | 17 | 1990, 2002, 1996, 1994, 1992, 1984, 1988, 2004, 1986, 1982, 2000 |