“I’ll leave the county if X is elected” is the mantra of morons. No, you won’t leave the country. You’'ll post annoying rants on Facebook, maybe send a strongly worded email to someone who won’t bother reading it, and if you’re really committed, you’ll attend a protest rally or twenty. But you won’t leave the country. Virtually no one does that over politics.
I certainly won’t leave the country. I might, however, start doing stand up comedy and verbally skewering Trump, Hillary, or whoever draws my righteous wrath. Yay First Amendment!