I live in PA, and I am going to guess that you are from the eastern part of the state, because that is the only area where Rendell is popular. Obama will carry eastern PA, but he needs help in rural and western PA where Rendell is disliked strongly. Eddie's approval ratings have nosedived, and early state polling shows that Rendell costs Obama a few points if he is on the ticket. Rendell wouldn't help him in any other states, and is the textbook bad choice.