 | ||||||||||||||||||||
| ||||||||||||||||||||
| ||||||||||||||||||||
 County results Mickelson: 50–60% 60–70% Herseth: 50–60% 60–70% 70–80% | ||||||||||||||||||||
| ||||||||||||||||||||
.jpeg)
| Elections in South Dakota |
|---|
 |
The 1986 South Dakota gubernatorial election was held on November 4, 1986 to elect the Governor of South Dakota. Incumbent Bill Janklow was term-limited, so the field for the new governor was open. Republican nominee George S. Mickelson was elected, defeating Democratic nominee Ralph Lars Herseth.