Gov. Ed Rendell made his observation Wednesday as he introduced Democratic National Committee Chairman Tim Kaine at an event in Philadelphia to rally Democrats for the November midterm elections.
Rendell says the GOP "is a party that's slowly but surely being taken over by wackos" who are "obsessed" with President Barack Obama's American citizenship and believe the unemployed refuse to work.
He says they also want to do away with the 14th Amendment to the Constitution to deny automatic U.S. citizenship to the children of illegal immigrants.
He adds that Democrats have "a lot to sell, but we haven't done a good job selling it."
Rendell is leaving office in January after two terms.