Political party strength in Pennsylvania

== Partisan identification in the electorate == On July 29, 2025, the Pennsylvania Department of State reported that there were 3,805,436 (42.9%) registered Democrats, 3,631,663 (40.9%) registered Republicans, 1,105,016 (12.5%) registered unaffiliated and 319,807 (3.6%) registered with other parties. == Partisan affiliation of elected officials == The following table indicates the party of elected officials in the U.S. state of Pennsylvania: Governor Lieutenant governor Attorney general State auditor general State treasurer The table also indicates the historical party composition in the: State senate State house of representatives State delegation to the United States Senate State delegation to the United States House of Representatives Following the 2020 Census, Pennsylvania lost one seat in the U.S. House of Representatives.

Source: Wikipedia — Political party strength in Pennsylvania (CC BY-SA 4.0)