NEVER! A win in Pennsylvania will hand Obama the nomination. There will no longer be a rationale for the Clinton candidacy. Obama will roll into Denver and be virtually coronated by the Dim convention. Republicans ought to stay out of this fight.
I suspect that at this point Clinton is going to roll in PA. Obama is going to need all the help he can get to keep it plausable that he remain the favorite for the nomination. This latest scandal is really poisonous and threatens to end him quicker than we’d like.