There may be a few high-profile cases, but emigrating is not as easy as it sounds. Unless you have valuable skills (or a lot of money) most countries that you'd actually want to live in will not accept you. I am fortunate that, as a nurse, I have skills that are in demand. But no, I'm not planning to leave if Trump wins. Neither will most people. It's just empty talk.
Anyway, Trump is no conservative. Oh, sure, he's taken some uber-conservative positions, but he also says stuff like, "I'm not going to let people die in the streets. Call it socialized medicine, call it whatever you want." I think this whole thing is just an act to get stupid people to vote for him. And it's working. There are a LOT of stupid people, after all. But there's never going to be a wall, and he knows it. It's just theatrics. I'd call it reality TV, but there's no "reality" involved.
I have to say that I am thoroughly enjoying this election season. Trump's singlehanded destruction of the Republican party is, quite simply, delicious. The flavors run down my chin like a juicy summer peach. I can't get enough.