A presidential election was held in Pennsylvania on October 30, 1840 as part of the 1840 United States presidential election. 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%.
Fetching the article from Wikipedia…
Text from the Wikipedia article “1840 United States presidential election in Pennsylvania”, available under CC BY-SA 4.0.