Don't even bother with people like this. For the 2018 and 2020 elections, concentrate on those who voted for Trump in 2016 because they either thought he couldn't possibly be as vile as advertised or that his business background might actually be good for the economy.
You're never going to reach people like this. Trump could shit on their pillow and call it a bed time mint and they'd eat it up like it was wrapped in an Ande's Mints package.
Your job in 2018 and 2020 is to energize everyone else and get them to the polls so that people like this get sent back to the lunatic fringe where they belong.