| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1986 | IA | D | Lt. Governor | Primary | 2 | 39,640 | 34.3% | ||
| 2004 | IA | D | U.S. Senate Class 3 | Primary | 1 | 52,318 | 100.0% | ||
| 2004 | IA | D | U.S. Senate Class 3 | General | 2 | 412,365 | 27.9% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |