Pennsylvania

Only the Philadelphia suburbs move back and forth a bit. Local politicians with incumbency have a better than even chance at lifetime jobs. The worst scoundrels are still seen as "our guy". Pennsylvanians put their pols on a political pedestal simply because they've been there a while, or they're local, or some such. Maybe it's all the lobbying groups and trade associations who get the laws they want, which is what community leaders want, and the pols deliver. There is not any political wind that would flip more than 5% of seats at the state level, in my opinion.