As for other candidates, Glenn Meakem (entrepreneur and conservative talk show host in Western PA) has declared that he will NOT run (he has kids 9, 10, and 11, and doesn't want to be an absentee father between now and 2018). I don't know of any other names at this time.
Thanks for the info. I think that Santorum could beat Casey this time around. It’s not 2006. PA’s chnged a lot, and with Obama atop the ticket, Casey could have trouble..besides, 6 years ago, I suspect that at least 1/3 of Casey’s voters thought they were voting for his father.Santorum’s gained a hig profile..name recognition..and if he ran..especaily since there’s no other name GOP candidate..he’d have NO trouble raising $$$$$