| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1968 | 45 | IL | R | Governor | Primary | 1 | 335,727 | 47.5% | |
| 1968 | 45 | IL | R | Governor | General | 1 | 2,307,295 | 51.2% | |
| 1972 | 49 | IL | R | Governor | Primary | 1 | 442,323 | 75.5% | |
| 1972 | 49 | IL | R | Governor | General | 2 | 2,293,809 | 49.0% | |
|
Age: Age as of July 1 of the year pertaining to this election. |