Are they gullible? Sure. Racist, homophobic, sexist? Go fuck yourself
From what I'm seeing, a part of the population voted Trump because of single issue things, while ignoring everything else. "Lower taxes = I get more money." "Upholding this one education enrollment law that helps me and only my race." That sort of thing. So they voted in their own interests. They voted for Trump while ignoring or overlooking all the harm that went with that vote.
It's a horrible thing to vote that way. It's ignorant, selfish, reductionist, possibly gullible, and a whole bunch of other things. Anyone who does voted Trump is indirectly condoning all the horrible hateful shit that Trump stands for. I'm still depressed from the election results and I'm not even American.
But I think there is a distinction there. People who voted Trump are not necessarily racist/sexist/etc themselves, but they are indirectly supporting it or looking the other way from those matters, which is
almost as bad, but is not exactly the same thing. I'm not defending these people - I think voting for him while ignoring all of his shit is incredibly irresponsible, shortsighted, and selfish, and I am mad at them, but I think there is a portion of his voters who aren't racists.
It's a simple logic thing. A and B are both parts of C, but that does not necessarily make A part of B.