| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 2002 | IL | R | U.S. Senate Class 2 | Primary | 2 | 259,515 | 31.4% | ||
| 2004 | IL | R | U.S. Senate Class 3 | Primary | 2 | 155,794 | 23.5% | ||
| 2006 | IL | R | Governor | Primary | 2 | 233,576 | 31.7% | ||
| 2008 | IL | R | U.S. House | District 14 | Primary | 1 | 44,462 | 56.4% | |
| 2008 | IL | R | U.S. House | District 14 | Special Primary | 1 | 41,980 | 56.0% | |
| 2008 | IL | R | U.S. House | District 14 | Special | 2 | 47,180 | 47.5% | |
| 2008 | IL | R | U.S. House | District 14 | General | 2 | 135,653 | 42.3% | |
| 2012 | IL | R | State Senate | District 025 | Primary | 1 | 10,084 | 48.9% | |
| 2012 | IL | R | State Senate | District 025 | General | 1 | 51,527 | 57.5% | |
| 2014 | IL | R | U.S. Senate Class 2 | Primary | 1 | 423,097 | 56.1% | ||
| 2014 | IL | R | U.S. Senate Class 2 | General | 2 | 1,538,522 | 42.7% | ||
| 2016 | IL | R | State Senate | District 025 | General | 1 | 54,636 | 54.7% | |
| 2020 | IL | R | U.S. House | District 14 | Primary | 1 | 13,333 | 25.6% | |
| 2020 | IL | R | U.S. House | District 14 | General | 2 | 197,835 | 49.3% | |
|
Age: Age as of July 1 of the year pertaining to this election. |