As wacky as this may sound, here in the liberal mecca of Chapel Hill, there are Bernie supporters who openly say that they feel Trump will do more for the working class than Hillary and they will never vote for her.
I interpret this to mean that they will stay home rather than vote for Trump, but it may just be enough to tip over a few purple states like Virginia.
Also, there are VERY FEW Hillary! bumper stickers anywhere in the Raleigh-Durham-Chapel Hill area. Lots of Bernie stickers on Priuses (or Prii?). Almost no Trump stickers anywhere. I did see a Kasich sticker on a minivan, however.
Trump and Sanders are both against free trade. I know Freepers freak out over liberal Hillary but Clinton is a uni-party who is no different than any establishment Republican. Clinton supported every neocon war W Bush did and every free trade agreement presented. Outside of some social issues Clinton is a Republican establishment type.