I feel like a lot of people on Trump’s side don’t care and all of his issues have been documented in the press. If people cared, he wouldn’t be this close.
You also have enough people left of Harris who don’t want to hold their collective noses and vote for her. They’ll complain about the Overton window shifting right, but won’t be a bulwark for keeping it from shifting right. Hell, there are people on Lemmy complaining about political utilitarianism as a reason for voting for Harris and will even complain about Bernie if he says something being done by the Biden administration is good.