| REPUBLICAN NATIONAL COMMITTEE | $118K | 1 | 1996 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $42K | 18 | 1996, 1998, 2002, 2006, 2008, 2014, 2016, 2020 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $40K | 16 | 1996, 2000, 2002, 2008, 2014 |
| UNION PACIFIC CORP. FUND FOR EFFECTIVE GOVERNMENT | $39K | 18 | 1996, 2000, 2002, 2004, 2006, 2008, 2014 |
| AMERICAN INSTITUTE OF CERTIFIED PUBLIC ACCOUNTANTS POLITICAL ACTION COMMITTEE | $38K | 15 | 1996, 2002, 2006, 2008, 2014 |
| EXXON MOBIL CORPORATION POLITICAL ACTION COMMITTEE (EXXONMOBIL PAC) | $38K | 16 | 1996, 2002, 2008, 2014, 2020 |
| AMERICAN ASSOCIATION OF NURSE ANESTHETISTS SEPARATE SEGREGATED FUND (CRNA-PAC) | $37K | 22 | 1996, 2000, 2002, 2004, 2006, 2008, 2010, 2014, 2018 |
| FUND FOR A CONSERVATIVE FUTURE | $35K | 7 | 2008, 2014, 2018, 2020 |
| ERNST & YOUNG POLITICAL ACTION COMMITTEE | $35K | 16 | 1996, 2002, 2004, 2006, 2008, 2014 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $35K | 11 | 1996, 2000, 2002, 2006, 2008, 2014 |