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1840 United States presidential election in Pennsylvania
County Results
Harrison
50–60%
60–70%
70–80%
Van Buren
50–60%
60–70%
70–80%
80–90%
A presidential election was held in Pennsylvania on October 30, 1840 as part of the 1840 United States presidential election .[ 1] Voters chose 30 representatives, or electors to the Electoral College , who voted for President and Vice President .
Pennsylvania voted for Whig challenger William Henry Harrison over Democratic incumbent Martin Van Buren by just 334 votes, a margin of 0.12%. It is the narrowest margin of victory in a presidential election in Pennsylvania history, with Donald Trump 's 2016 win following close behind at 0.72%.