| Year | Age | State | Party | Office | District | Stage | Pos | Votes | % |
|---|---|---|---|---|---|---|---|---|---|
| 1962 | TX | D | Lt. Governor | Primary | 4 | 183,594 | 14.4% | ||
| 1966 | TX | D | Attorney General | Primary | 1 | 540,280 | 45.7% | ||
| 1966 | TX | D | Attorney General | Primary Runoff | 1 | 363,709 | 55.9% | ||
| 1966 | TX | D | Attorney General | General | 1 | 980,148 | 69.6% | ||
| 1968 | TX | D | Attorney General | Primary | 1 | 1,184,765 | 100.0% | ||
| 1968 | TX | D | Attorney General | General | 1 | 1,950,193 | 70.7% | ||
| 1970 | TX | D | Attorney General | Primary | 1 | 981,650 | 75.3% | ||
| 1970 | TX | D | Attorney General | General | 1 | 1,614,149 | 72.9% | ||
| 1972 | TX | D | Attorney General | Primary | 2 | 897,921 | 45.0% | ||
|
Age: Age as of July 1 of the year pertaining to this election. |