| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1976 | IA | D | State Senate | District 022 | General | 2 | 11,314 | 45.3% | |
| 1982 | IA | D | Commissioner of Agriculture | Primary | 1 | 125,515 | 100.0% | ||
| 1982 | IA | D | Commissioner of Agriculture | General | 2 | 428,154 | 44.0% | ||
| 1986 | IA | D | State Senate | District 045 | General | 1 | 10,969 | 56.3% | |
| 1990 | IA | D | State Senate | District 045 | General | 1 | 12,681 | 61.7% | |
|
Age: Age as of July 1 of the year pertaining to this election. |