The 1914 United States Senate election in Pennsylvania was held on November 3, 1914. Incumbent Republican U.S. Senator Boies Penrose won re-election against Gifford Pinchot and A. Mitchell Palmer.
This is the first Class III senate election in Pennsylvanian history in which all voters chose the Senate seats. Prior Senate seats were chosen by the Pennsylvania House of Representatives.
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Text from the Wikipedia article “1914 United States Senate election in Pennsylvania”, available under CC BY-SA 4.0.