So, if you are a rational, logical, coherent, compassionate, humane individual (any one, or all) then there isn't any question that you will vote for Hillary Clinton. It really doesn't matter if you like her, her politics, her policies, her family, since the other major party candidate has no business being anywhere close to power.
The apparently >50% of Trump supporters who are deplorables of one variety or another has been discussed elsewhere quite a bit. The remainder are more of a question. It's possible that many of his other supporters are also deplorables, but smart enough not to answer questions in a way that proves it. It also seems like there is a group that just wants to blow shit up. People who may not ever bother voting, or who regularly vote for 3rd party candidates, and who see in Trump a candidate whose election could actually wreck US politics. I should add: no matter how bad he will be, he won't be enough to destroy US politics so it can be reworked. He's too incompetent. He will do real lasting harm, but the likelyhood of much good coming of it is low, and whatever good may come won't be enough to offset the damage.
I think the "Blow Shit Up" constituency is largely incoherent, lacks knowledge of our world/country/politics and/or just doesn't give a damn about their fellow human beings/Americans. They are, however, a constituency that doesn't normally have a major party candidate to support, and because they don't necessarily vote in most elections, they may be larger than most people think.