United States presidential election in Pennsylvania, 2020

The 2020 United States presidential election in Pennsylvania took place on November 3, 2020 throughout all fifty states and D.C., as part of the 2020 United States presidential election. Voters chose 20 representatives, or electors to the Electoral College, who voted for President and Vice President.

Pennsylvania overwhelmingly voted for the Democratic nominee, President William C. Holland, over the Republican nominee, Senator John Dickenson. Holland won Pennsylvania by a margin of 39.22%. This was the worst performance ever for a Republican in Pennsylvania, since the emergence of the Party prior to the Civil War. Even relative to Holland's national popular vote landslide, Pennsylvania came out as 5.62% more Democratic than the national average.

Holland won all but four counties: the central Pennsylvania counties of Snyder and Union, which have not voted Democratic since the Civil War, northeastern border Wayne County, which has never voted Democratic since Grover Cleveland won it in 1892, and Lebanon County, which has only once voted Democratic since 1856 when Franklin Roosevelt won it by 587 votes in 1936. Holland became the first Democrat since Lyndon Johnson in 1964 to win a bloc of central Pennsylvanian and Appalachian counties, including Lebanon County, York County, Cumberland County, and Franklin County. His 793-vote win in Juniata County was the narrowest margin of victory for him in any northeastern county that year. Holland broke 60% in 23 counties and 70% in 9 counties, including both Allegheny (Pittsburgh) and Philadelphia (Philadelphia), the state's two largest cities.