It will become just like the "Libertarian" subreddit. Nobody who posts there after a couple weeks will be real Trump supporters, and crazed leftists will use it as a prime example everytime they need to point at their ridiculous belief that he has no supporters or that everyone who once voted for him now hates him.

I can guarantee dozens of "I voted for Trump in 2016 but he no longer has my support" type posts in the near future.