| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1982 | 38 | IA | D | Governor | Primary | 1 | 94,481 | 48.2% | |
| 1982 | 38 | IA | D | Governor | General | 2 | 483,291 | 46.5% | |
| 2010 | 66 | IA | D | U.S. Senate Class 3 | Primary | 1 | 52,715 | 77.8% | |
| 2010 | 66 | IA | D | U.S. Senate Class 3 | General | 2 | 371,686 | 33.3% | |
|
Age: Age as of July 1 of the year pertaining to this election. |