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County results Clark Jr.: 50–60% 60–70% Duff: 40–50% 50–60% 60–70% 70–80% | |||||||||||||||||
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Elections in Pennsylvania |
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Government |
The 1956 United States Senate election in Pennsylvania was held on November 6, 1956. Incumbent Republican U.S. Senator James H. Duff sought re-election to another term, but was defeated by the Democratic nominee, Joseph S. Clark, Jr.