| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1982 | TX | D | Commissioner of Agriculture | Primary | 1 | 722,209 | 59.4% | ||
| 1982 | TX | D | Commissioner of Agriculture | General | 1 | 1,872,001 | 61.8% | ||
| 1986 | TX | D | Commissioner of Agriculture | Primary | 1 | 827,125 | 81.6% | ||
| 1986 | TX | D | Commissioner of Agriculture | General | 1 | 1,948,736 | 59.9% | ||
| 1990 | TX | D | Commissioner of Agriculture | Primary | 1 | 821,192 | 63.9% | ||
| 1990 | TX | D | Commissioner of Agriculture | General | 2 | 1,820,145 | 47.9% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |