| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1992 | 37 | IL | R | State House | District 087 | General | 1 | 22,406 | 50.9% |
| 1994 | 39 | IL | R | State House | District 087 | General | 1 | 22,267 | 72.0% |
| 1996 | 41 | IL | R | State House | District 087 | General | 1 | 27,519 | 100.0% |
| 1998 | 43 | IL | R | State House | District 087 | General | 1 | 26,083 | 100.0% |
| 2000 | 45 | IL | R | State House | District 087 | General | 1 | 29,862 | 74.8% |
| 2002 | 47 | IL | R | State Senate | District 053 | Primary | 1 | 18,928 | 57.1% |
| 2002 | 47 | IL | R | State Senate | District 053 | General | 1 | 60,786 | 100.0% |
| 2004 | 49 | IL | R | State Senate | District 053 | Primary | 1 | 24,192 | 100.0% |
| 2004 | 49 | IL | R | State Senate | District 053 | General | 1 | 85,871 | 100.0% |
| 2006 | 51 | IL | R | Secretary of State | Primary | 1 | 602,147 | 100.0% | |
| 2006 | 51 | IL | R | Secretary of State | General | 2 | 1,158,671 | 33.0% | |
| 2008 | 53 | IL | R | State Senate | District 053 | Primary | 1 | 28,957 | 100.0% |
| 2008 | 53 | IL | R | State Senate | District 053 | General | 1 | 90,199 | 100.0% |
| 2010 | 55 | IL | R | Treasurer | Primary | 1 | 654,517 | 100.0% | |
| 2010 | 55 | IL | R | Treasurer | General | 1 | 1,811,293 | 49.7% | |
| 2014 | 59 | IL | R | Governor | Primary | 4 | 61,948 | 7.6% | |
|
Age: Age as of July 1 of the year pertaining to this election. |