Hillary is problematic for her connections to big money and her status as a warmonger. There are people who cannot support her on principle based on her past actions and her tendency to switch positions over time making her appear untrustworthy.
I doubt most people who can't stomach Hillary will vote for Trump (unless they have other motives like a kind of "nuclear option" to expose the system's issues). However I've heard some people say they'll vote for Jill Stein of the Green Party. If people who usually vote for the Democratic party's candidate don't, that certainly helps Trump.
Hot take.
Very insightful.