When pressed, the more mainstream supporters of Donald Trump in the Republican party insist that they believe that Trump does not really mean the full import of his wildest statements. He doesn't really plan to block all Muslims from entering the country, he doesn't really mean to deport all undocumented immigrants, he doesn't really mean to.... etc. So, as I understand their thought process, it is okay to support his candidacy and this doesn't mean that you support all that crazy stuff.
Interestingly, these self-same people have a burning hatred (or at least a profound irrevocable mistrust) of Hillary Clinton because they believe that she doesn't really mean what she says during the campaign or in her prior political activities. They are positively obsessed with conspiracy-level accusations about her alleged insincerity, dis-ingenuity and secret machinations. And completely and utterly unable to take her policy statements, and descriptions of her reasons for her prior actions, at face value. And to be clear, it is not just that they criticize her actions. They are worked up to an absolute frenzy about their beliefs about her alleged insincerity, far more than they are about the actual policies or actions.
It's fascinating. On the one hand Republicans support Trump because they believe he is a liar. On the other hand, they absolutely hate Clinton because they believe that she is a liar.