Kneip: 50–60% 60–70%
Olson: 50-60% 60-70% 70-80%
The 1974 South Dakota gubernatorial election was held on November 5, 1974, to elect a Governor of South Dakota. This election was the first in South Dakota to elect the governor for a four-year term, after it was allowed by a constitutional amendment passed in 1972. Democratic nominee and Governor Richard F. Kneip was re-elected, defeating Republican nominee John E. Olson. As of 2020, this is the most recent election in which a Democrat was elected Governor of South Dakota.
- Richard F. Kneip, incumbent Governor of South Dakota
- Bill Dougherty, Lieutenant Governor of South Dakota
|Democratic||Richard F. Kneip (Incumbent)||45,932||66.19|
- John E. Olson
- Ronald F. Williamson
- Oscar W. Hagen
|Republican||John E. Olson||49,973||55.57|
|Republican||Ronald F. Williamson||25,509||28.37|
|Republican||Oscar W. Hagen||14,444||16.06|
|Democratic||Richard F. Kneip (inc.)||149,151||53.61|
|Republican||John E. Olson||129,077||46.39|
- Public affairs, Issues 52-108. Retrieved June 5, 2014.
- "Official Election Returns for South Dakota" (PDF). South Dakota Secretary of State. 1974. Retrieved June 5, 2014.
- Leip, David (March 29, 2010). "1974 Gubernatorial General Election Results – South Dakota". Atlas of U.S. Presidential Elections. Retrieved June 5, 2014.
- "Official Election Results for South Dakota" (PDF). South Dakota Secretary of State. 1974. Retrieved June 5, 2014.