The 1900 United States presidential election in Pennsylvania took place on November 6, 1900 throughout 45 states. Voters chose 32 representatives, or electors to the Electoral College, who voted for President and Vice President.
Pennsylvania overwhelmingly voted for the Republican nominee, President William McKinley, over the Democratic nominee, former U.S. Representative and 1896 Democratic presidential nominee William Jennings Bryan. McKinley won Pennsylvania by a landslide margin of 24.31% in this rematch of the 1896 presidential election. The return of economic prosperity and recent victory in the Spanish–American War helped McKinley to score a decisive victory.