| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1972 | IA | D | Secretary of State | Primary | 1 | 110,392 | 100.0% | ||
| 1972 | IA | D | Secretary of State | General | 2 | 475,978 | 41.9% | ||
| 2002 | IA | D | State Senate | District 025 | General | 1 | 11,400 | 58.5% | |
| 2006 | IA | D | State Senate | District 025 | General | 1 | 13,032 | 67.1% | |
| 2010 | IA | D | State Senate | District 025 | Primary | 1 | 1,641 | 99.2% | |
| 2010 | IA | D | State Senate | District 025 | General | 1 | 10,504 | 54.2% | |
| 2014 | IA | D | State Senate | District 005 | Primary | 1 | 1,317 | 100.0% | |
| 2014 | IA | D | State Senate | District 005 | General | 2 | 9,801 | 44.2% | |
|
Age: Age as of July 1 of the year pertaining to this election. |