Political party strength in Pennsylvania

Partisan identification in the electorate
On July 10, 2023, the Pennsylvania Department of State reported that there were 3,890,435 (45.2%) registered Democrats, 3,432,657 (39.9%) registered Republicans, 929,364 (10.8%) registered unaffiliated and 346,280 (4.0%) 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. As a result, starting with the general election of 2022, Pennsylvania sent 17 members to the house, and beginning with the general election of 2024 will have 19 electoral votes.