HR will NEVER put something in writing if they don't have a case for firing. Stating a political view is NOT a fire able offense if everyone else is free to state a political view.
They are going to fire you. It's only a matter of time. The leftists think you are irredeemable. They are going to look at everything you do and use it as justification to fire you. It doesn't make a difference if you ever say another word.
What could be fun is to ENTHUSIASTICALLY and over the top AGREE with those who make leftist supporting statement. For example if someone says "Donald Trump is a racist" you could say "He SURE is. He HATES BLACK people that's why he's put in policies that have made RECORD numbers of black people go out and get jobs. He WANTS to see black people work themselves like dogs. He's a darn racist."
> The leftists think you are irredeemable.
I’d use the word “deplorable” ;-)