April 29, 2013 - Leading Dems Top Corbett In Pennsylvania Gov Race, Quinnipiac University Poll Finds; Dem Primary Is A Race Between Schwartz And Sestak Each of three leading Democrats who might challenge Pennsylvania Gov. Tom Corbett for reelection in 2014 lead the Republican incumbent by margins of 9 percentage points or higher, according to a Quinnipiac University poll released today. http://www.quinnipiac.edu/institutes-and-centers/polling-institute/pennsylvania/release-detail?ReleaseID=1889 media.cagle.com/20/2013/05/13/131635_600.jpg