| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1988 | MT | D | U.S. Senate Class 1 | Primary | 2 | 30,212 | 25.5% | ||
| 1992 | MT | D | Governor | Primary | 4 | 4,216 | 3.2% | ||
| 1996 | MT | D | Governor | Primary | 2 | 18,761 | 25.4% | ||
| 2002 | MT | Green | U.S. Senate Class 2 | General | 4 | 7,653 | 2.3% | ||
| 2004 | MT | Green | Governor | General | 3 | 8,393 | 1.9% | ||
| 2006 | MT | R | U.S. Senate Class 1 | Primary | 3 | 4,082 | 4.2% | ||
| 2008 | MT | R | U.S. Senate Class 2 | Primary | 1 | 26,936 | 36.3% | ||
| 2008 | MT | R | U.S. Senate Class 2 | General | 2 | 129,972 | 27.1% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |