If the polls keep showing Mrs Bill winning in a romp right up to the Election then when the 66% Trump win is converted to a 3% win for Clinton the people are supposed to accept that they were just wrong and the 2012 conservative enthusiasm and folks like Dick Morris predicting a McCain landslide will be brought up to make it more believable. Morris might well have been right, though. The vote conversion skills do nothing but improve and the technology has made it easier than ever before.
McCain ran in 2008 not in 2012.