2010 Pennsylvania gubernatorial election

The 2010 Pennsylvania gubernatorial election was held on November 2, 2010, to elect the governor and lieutenant governor of Pennsylvania, concurrently with elections to the United States Senate in Pennsylvania and other states, elections to the United States House of Representatives, and various state and local elections.

Incumbent Democratic Governor Ed Rendell was term-limited and thus ineligible to seek re-election in 2010. In the primary, Democrats nominated Allegheny County Chief Executive Dan Onorato, who defeated Pennsylvania Auditor General Jack Wagner, State Senator Anthony H. Williams, and Montgomery County Commissioner Joe Hoeffel. Republicans nominated Pennsylvania Attorney General Tom Corbett, who defeated State Representative Sam Rohrer in the primary. In primary elections for lieutenant governor, which were held separately, Scott Conklin defeated Jonathan Saidel and Doris Smith-Ribner in the Democratic primary. Jim Cawley emerged from a nine-candidate field in the Republican primary.

Corbett defeated Onorato in the November general election. Rendell's low approval ratings was described as analysts as a catalyst for Onorato's loss. As lieutenant gubernatorial nominees run on a joint ticket with the gubernatorial nominee of their respective parties in the general election in Pennsylvania, Cawley was elected lieutenant governor over Conklin. As of 2025, this is the last time a Republican was elected governor of Pennsylvania, and the only time since 1998. This is also the last time Republicans won the following counties in a gubernatorial election: Allegheny, Erie, Beaver, Centre, Dauphin, Luzerne, Monroe, Northampton, Lehigh, Berks, Bucks, and Chester. This is the last Pennsylvania gubernatorial election in which the winner won a majority of counties.