| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1972 | IA | D | State House | District 007 | Primary | 1 | 1,259 | 51.5% | |
| 1972 | IA | D | State House | District 007 | General | 1 | 7,036 | 56.1% | |
| 1978 | IA | D | Treasurer | Primary | 1 | 79,686 | 100.0% | ||
| 1978 | IA | D | Treasurer | General | 2 | 336,163 | 44.5% | ||
| 2004 | IA | D | State Senate | District 010 | Primary | 2 | 239 | 19.8% | |
| 2010 | IA | D | U.S. Senate Class 3 | Primary | 2 | 8,728 | 12.9% | ||
| 2016 | IA | D | U.S. Senate Class 3 | Primary | 4 | 6,425 | 6.6% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |