I think this election will come down to two demographics, unless the Indies break hard in one direction or the other - the crossovers, and the skip overs. Trump has the Nevertrumps that won't vote for him, and Hillary has the Bernies and the blue collar dems to worry about. Then you got the skip overs, those that will vote neither and skip over them to the next race on the ballot, stay home, or vote third party.