The 1968 United States Senate election in Iowa took place on November 5, 1968. Incumbent Republican U.S. Senator Bourke B. Hickenlooper retired. The open seat was won by Democratic Governor Harold E. Hughes, narrowly defeating Republican State Representative David M. Stanley.
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County results Hughes: 50–60% 60–70% Stanley: 50-60% 60-70% 70-80% | |||||||||||||||||
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Party | Candidate | Votes | % | ±% | |
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Democratic | Harold E. Hughes | 574,884 | 50.25% | 3.64 | |
Republican | David M. Stanley | 568,469 | 49.69% | 3.70 | |
Prohibition | Verne Higens | 727 | 0.06% | N/A | |
Total votes | 1,143,353 | 100.00% | |||
Democratic gain from Republican | Swing |