The 1968 Iowa gubernatorial election was held on November 5, 1968. Incumbent Democrat Harold Hughes did not seek a fourth term, and instead ran successfully for the U.S. Senate. Republican nominee Robert D. Ray defeated Democratic nominee Paul Franzenburg with 54.06% of the vote. No Democrat would be elected Governor of Iowa until 1998.
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Text from the Wikipedia article “1968 Iowa gubernatorial election”, available under CC BY-SA 4.0.