| NRCC | $130K | 26 | 1996, 1994, 2006, 2008 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $83K | 38 | 2010, 2002, 1996, 1994, 2006, 1998, 2004, 2012, 2008, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $81K | 48 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| AMERICA'S CREDIT UNIONS PAC OF CREDIT UNION NATIONAL ASSOCIATION, INC. | $79K | 54 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| SMART TD PAC | $76K | 34 | 2010, 2002, 1996, 1998, 2004, 2012, 2008, 2000 |
| UNITED PARCEL SERVICE, INC. PAC (UPSPAC) | $72K | 51 | 2010, 2002, 1996, 1994, 2006, 1998, 2004, 2012, 2008, 2000 |
| AIR LINE PILOTS ASSOCIATION PAC | $65K | 35 | 2010, 2002, 1996, 2006, 1998, 2004, 2012, 2008, 2000 |
| ENGINEERS POLITICAL EDUCATION COMMITTEE (EPEC)/INTERNATIONAL UNION OF OPERATING ENGINEERS | $64K | 27 | 2010, 2002, 2006, 1998, 2004, 2012, 2008, 2000 |
| LABORERS' INTERNATIONAL UNION OF NORTH AMERICA (LIUNA) PAC | $63K | 28 | 2010, 2002, 2006, 1998, 2004, 2012, 2008, 2000 |
| FIRSTENERGY CORP POLITICAL ACTION COMMITTEE | $63K | 45 | 2010, 2002, 1996, 1994, 2006, 1998, 2004, 2012, 2008, 2000 |