1936 United States presidential election in Pennsylvania

The 1936 United States presidential election in Pennsylvania took place on November 3, 1936, as part of the 1936 United States presidential election. Voters chose 36 representatives, or electors to the Electoral College, who voted for president and vice president.

Pennsylvania voted for the Democratic nominee, President Franklin D. Roosevelt, over the Republican nominee, Kansas Governor Alf Landon, by a large margin of 16.04%. After the state voted to re-elect incumbent Republican Herbert Hoover in 1932, Roosevelt became the first Democrat to win Pennsylvania since native son James Buchanan in 1856.

Roosevelt's victory marked the beginning of the state's shift from a Republican stronghold to a key swing state, and began a Democratic winning streak in the city of Philadelphia which has yet to be broken. Pennsylvania has backed the winning candidate in all but four presidential elections since (1948, 1968, 2000, and 2004).

As of the 2020 presidential election, this is the only election since 1856 in which Lebanon County has voted for a Democratic presidential candidate. Roosevelt became the first Democrat since Franklin Pierce in 1852 to win Armstrong County and the first since 1856 to win Blair County, Dauphin County, and Philadelphia County. Mifflin County voted Democratic for the first time since 1884.