1791 United States Senate election in Pennsylvania From Wikipedia, the free encyclopedia In 1791, the Pennsylvania legislature failed to elect a U.S. Senator due to a disagreement on procedure.[1] The seat would remain vacant until 1793.[1] See also List of United States senators from Pennsylvania United States Senate elections, 1790 and 1791 References [1]Cox, Harold E. "U.S. Senate Election 1791" (PDF). Wilkes University Election Statistics Project. External links Pennsylvania Election Statistics: 1682-2006 from the Wilkes University Election Statistics Project Related Articles