| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $105K | 43 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 2000 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $90K | 48 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 2000 |
| CATERPILLAR INC. POLITICAL ACTION COMMITTEE (CATPAC) | $81K | 37 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 2000 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $78K | 33 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 1986, 2000 |
| AMERICAN INSTITUTE OF CERTIFIED PUBLIC ACCOUNTANTS POLITICAL ACTION COMMITTEE | $74K | 42 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2000 |
| ILLINOIS REPUBLICAN PARTY - FEDERAL | $70K | 6 | 2002, 1998 |
| NCTA - THE INTERNET & TELEVISION ASSOCIATION POLITICAL ACTION COMMITTEE (NCTAPAC) | $68K | 18 | 2002, 1996, 1994, 2006, 1992, 1998, 2004, 2008, 2000 |
| BUILD POLITICAL ACTION COMMITTEE OF THE NATIONAL ASSOCIATION OF HOME BUILDERS (BUILDPAC) | $65K | 39 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 1986, 2000 |
| NRCC | $62K | 143 | 1990, 1996, 1994, 1992, 1988, 1986, 2000 |
| UNITED PARCEL SERVICE, INC. PAC (UPSPAC) | $61K | 57 | 1990, 2002, 1996, 1994, 2006, 1992, 1988, 1998, 2004, 2008, 2000 |