Herman Cain 20%
Newt Gingrich 19%
Mitt Romney 14%
Michele Bachmann 10%
Ron Paul 10%
Rick Perry 5%
Rick Santorum 4%
Jon Huntsman 2%
Gary Johnson 1%
"Pennsylvania has a history of swinging back and forth from Republican to Democrat, Democrat to Republican in statewide races," said Robb Austin, a Pennsylvania political consultant and former state representative.Real Clear Politics
This has been true in the Senate -- Democrat Harris Wofford won a special election to replace John Heinz in 1991, and was then defeated by conservative Republican Rick Santorum, who was knocked out four years ago by Democrat Robert Casey Jr. -- as well as in gubernatorial elections...