Any chance that Casey could lose with Obama atop the ticket? I’d like to see Santorum drop out and run for his old seat..
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.