| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1993 | TX | D | U.S. Senate Class 1 | Special Open Primary | 8 | 11,331 | 0.6% | ||
| 1998 | TX | D | Attorney General | Primary | 3 | 87,097 | 13.3% | ||
| 2000 | TX | D | U.S. Senate Class 1 | Primary | 1 | 220,531 | 35.7% | ||
| 2000 | TX | D | U.S. Senate Class 1 | Primary Runoff | 1 | 143,666 | 58.5% | ||
| 2000 | TX | D | U.S. Senate Class 1 | General | 2 | 2,030,315 | 32.3% | ||
| 2002 | TX | D | U.S. Senate Class 2 | Primary | 4 | 44,038 | 4.6% | ||
| 2006 | TX | D | U.S. Senate Class 1 | Primary | 2 | 191,400 | 38.2% | ||
| 2006 | TX | D | U.S. Senate Class 1 | Primary Runoff | 2 | 82,589 | 39.8% | ||
| 2006 | TX | D | U.S. House | District 21 | General | 3 | 18,355 | 9.0% | |
| 2008 | TX | D | U.S. Senate Class 2 | Primary | 2 | 584,966 | 26.9% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |