It's not for "belonging to the wrong party" - it's supporting a clinical psychopath, a pathological liar, and a malignant narcissist.
Trump is obviously deranged.
I still have a few Trump supporting Facebook friends and I used to have a lot. I asked each of them at some point for a recent clip of one minute of Trump talking coherently and honestly.
No two people gave me the same clips, and this clips were blathering hateful horror shows full of lies, self-contradictions, and endless, endless self-aggrandizement. No sane person could have watched those incoherent dishonest rambles and said, "This is a competent and compassionate person."
It is literal madness.
I packed up and left in December 2016, and I've never regretted it.