Pittsburgh Tribune-Review Tom Corbett’s dilemma (Commentary) Larry Sabato, a University of Virginia political science professor who writes the Crystal Ball newsletter, ranks Corbett as the most likely incumbent governor to be defeated for re-election next year. http://service.meltwaternews.com/mnews/redirect.html?docId=2871628986&userId=1676096&cId=461430&agentId=622379&type=2&s=81182&url=http%3A%2F%2Ftriblive.com%2Fopinion%2Fbradbumsted%2F4230736-74%2Fcorbett-budget-deadline