ITT: Clinton hacks suggesting that PA (which they insist is always unwinnable for any Republican because inelasticity!) would suddenly somehow vote for Trump/Palin over a Democrat who is polling as well as or better than Hillary in most polls.
Sanders would be a terrible candidate in the general. Sure, the early numbers look really good for Sanders, but there is a lot of opposition research that Trump could destroy him with. Plus, I'm not confident that a frail old man who allows a microphone to be snatched from his hands is at all up to the task of winning. Turnout would be low with such an unappealing match up and low turnout benefits Republicans.