 
The 1978 Pennsylvania gubernatorial election was held on November 7, 1978. Incumbent Governor Milton Shapp was constitutionally ineligible to run for a third consecutive term in office. Republican Dick Thornburgh defeated Democrat Pete Flaherty in the general election.
Democratic primary.
Campaign.
The race began with a primary that slated an impressive field of candidates. Flaherty, the former Mayor of Pittsburgh who was known for providing a progressive challenge to urban machine politics, bested State Auditor General Bob Casey, who had lost the Democratic nomination for this office twice before. Casey's campaign was greatly hurt by the presence of another Bob Casey who was running on the ballot for Lieutenant Governor; voters believed they were selecting a ticket of Flaherty and the Auditor General when they chose the Pittsburgh teacher as the Democratic running mate. Lieutenant Governor Ernie Kline, who was frequently known as "assistant governor" during his time in office due to his policy skills, was endorsed by outgoing governor Milton Shapp, but finished a distant third.
Notes.
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