Also very true, but that can’t be all of them. While they are all “guilty” of supporting, or at least tolerating his many flavors of bigotry, there must be a substantial fraction to whom his economic, and social promises are the primary reason for supporting him, and those might still break away at some point.
Also, he’s a show business man. If he understands anything, it’s ratings. That’s why he never stopped campaigning. I would imagine that he and his staff are glued to the polls, and 95% of his statements and travels are designed to micro-manage his ratings, and counter any kind of budding discontent with a new performance.