| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1964 | IA | D | Lt. Governor | Primary | 1 | 87,927 | 100.0% | ||
| 1964 | IA | D | Lt. Governor | General | 1 | 648,150 | 57.8% | ||
| 1966 | IA | D | Lt. Governor | Primary | 1 | 70,635 | 100.0% | ||
| 1966 | IA | D | Lt. Governor | General | 1 | 424,968 | 49.9% | ||
| 1970 | IA | D | Governor | Primary | 1 | 48,459 | 46.7% | ||
| 1970 | IA | D | Governor | General | 2 | 368,911 | 46.6% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |