| NRCC | $133K | 155 | 1984, 1988, 1980, 1986, 1982 |
| AMERICAN MEDICAL ASSOCIATION POLITICAL ACTION COMMITTEE | $37K | 12 | 1984, 1988, 1980, 1986, 1982 |
| COMMITTEE FOR THOROUGH AGRICULTURAL POL ED OF DAIRY FARMERS OF AMERICA INC (C-TAPE OF DFA) | $36K | 13 | 1984, 1988, 1980, 1986, 1982 |
| NATIONAL ASSOCIATION OF REALTORS POLITICAL ACTION COMMITTEE | $22K | 12 | 1984, 1988, 1980, 1986, 1982 |
| REPUBLICAN PARTY OF IOWA | $18K | 7 | 1984, 1980, 1982 |
| HAWKEYE BANCORPORATION POLITICAL ACTION COMMITTEE (HAWKEYE BAN/PAC) | $18K | 9 | 1984, 1988, 1980, 1986, 1982 |
| AMERICAN ASSOCIATION FOR JUSTICE POLITICAL ACTION COMMITTEE (AAJ PAC) | $16K | 7 | 1984, 1988, 1980, 1986, 1982 |
| NATIONAL AUTOMOBILE DEALERS ASSOCIATION POLITICAL ACTION COMMITTEE | $16K | 5 | 1984, 1988, 1980, 1986, 1982 |
| NATIONAL ASSOCIATION OF INSURANCE AND FINANCIAL ADVISORS POLITICAL ACTION COMM | $16K | 14 | 1984, 1988, 1980, 1986, 1982 |
| AMERICAN BANKERS ASSOCIATION PAC (BANKPAC) | $15K | 7 | 1984, 1988, 1980, 1982 |