One important aspect you aren't addressing here is research that shows a certain percentage of people in every election simply vote for the candidate they've always voted for... many people's parents voted Republican, and they've always voted Republican, so they just vote Republican. There's nothing you can do to flip these votes. They are just gonna vote Republican no matter who the candidate is. It's how people are able to call races before all the votes are in. Beyond that, though, I think you are right about the emotional response Trump evokes in his voters, and specifically the feeling of being attacked.... white people feel that they are being attacked or being made to feel ashamed for the color of their skin by the left. The right amplifies these fears. These white voters are not responding as racists necessarily, but as human beings who are being told they are inherently flawed and should give up something for this reason.