The 1956 United States Senate election in Iowa took place on November 6, 1956. Incumbent Republican Senator Bourke B. Hickenlooper was re-elected to a third term in office over Democrat Rudolph M. Evans.
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County results Stanley: 50-60% 60-70% 70-80% Evans: 50–60% | |||||||||||||||||
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Party | Candidate | Votes | % | ±% | |
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Republican | Bourke B. Hickenlooper (incumbent) | 635,499 | 53.92% | 0.90 | |
Democratic | Rudolph M. Evans | 543,156 | 46.08% | 1.38 | |
Total votes | 1,178,655 | 100.00% |