| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1990 | 44 | IL | R | Attorney General | General | 2 | 1,560,831 | 48.5% | |
| 1994 | 48 | IL | R | Attorney General | Primary | 1 | 471,068 | 71.6% | |
| 1994 | 48 | IL | R | Attorney General | General | 1 | 1,651,976 | 53.6% | |
| 1998 | 52 | IL | R | Attorney General | Primary | 1 | 643,487 | 100.0% | |
| 1998 | 52 | IL | R | Attorney General | General | 1 | 2,026,781 | 60.9% | |
| 2002 | 56 | IL | R | Governor | Primary | 1 | 410,074 | 44.7% | |
| 2002 | 56 | IL | R | Governor | General | 2 | 1,594,960 | 45.1% | |
| 2010 | 64 | IL | R | Governor | Primary | 4 | 130,785 | 17.0% | |
|
Age: Age as of July 1 of the year pertaining to this election. |