Both candidates are not contesting a state in the final 48 hours that has a double-digit lead for Clinton. It would be absolutely idiotic if their internals were showing that wide of a gap.
he has had internals but he seemed to have cut off most of his pollsters (some of his close aids even confirmed off the records that they did not poll MN recently) and like most desperate candidates, who would need some impropable (not impossible) breakthrough to win, he is just pushing each brick and try to find the loose one.
if there is one, he would find it, if not....bad luck.
imho camping 24/7 in MI/PA would have been the most realistic way...if they are up for grabs.