| NRSC | $236K | 13 | 1982, 1984, 1986, 1988, 1994, 2010, 2012 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $75K | 23 | 1982, 1988, 1992, 1994, 2000, 2004, 2006, 2008, 2010, 2012, 2018 |
| AFLAC POLITICAL ACTION COMMITTEE (AFLAC PAC) | $70K | 27 | 1982, 1986, 1988, 1994, 1998, 2000, 2004, 2012, 2014, 2016, 2018 |
| NATIONAL RESTAURANT ASSOCIATION PAC (RESTAURANT PAC) | $64K | 24 | 1980, 1982, 1988, 1992, 1994, 1996, 2000, 2006, 2012, 2014, 2016, 2018 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $62K | 43 | 1982, 1984, 1988, 1994, 1998, 2000, 2006, 2012, 2018 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $59K | 22 | 1982, 1988, 1994, 2000, 2002, 2006, 2012 |
| AMERICAN PROPERTY CASUALTY INSURANCE ASSOCIATION POLITICAL ACTION COMMITTEE (INSURING AMERICA PAC) | $57K | 25 | 1982, 1984, 1988, 1992, 2000, 2004, 2006, 2012, 2016, 2018 |
| UNION PACIFIC CORP. FUND FOR EFFECTIVE GOVERNMENT | $57K | 27 | 1982, 1988, 1992, 2000, 2006, 2010, 2012, 2016, 2018 |
| AMERICAN HOSPITAL ASSOCIATION PAC | $56K | 39 | 1982, 1988, 1992, 1994, 1998, 2000, 2004, 2006, 2012, 2016, 2018 |
| ELI LILLY AND COMPANY POLITICAL ACTION COMMITTEE | $55K | 28 | 1982, 1986, 1988, 1994, 1996, 1998, 2000, 2004, 2006, 2010, 2012, 2014, 2016, 2018 |