Screw them, I wouldn’t sell to them either.
If they want to vote for the people who want to ban stuff or make it harder for me to enjoy my hobby or defend myself, then they can suck it. They can like guns all they want, but they are not pro-2nd Amendment if they vote for Democrats.
They are voting to make it so there is an artificially limited supply of a good, then want to buy some of that good before the supply is limited. I say that shops are well within good conscious to exclude them from the market.