The whole Republican strategy seems broken to me. They're talking about all the wrong things. At this point, I'm thinking that Biden is going to win by a landslide. He's currently ahead in Florida and Arizona, which Trump needs to win. The polls may still tighten, but I suspect that pollsters are more likely to have overcorrected than undercorrected after 2016; in other words, I expect polling error to go in the opposite direction to 2016.
....