If you assume those % are the same for those per county, that's a net Biden ~8400 votes, not enough, but the mail ins are usually higher to Biden. It's going to be damn close. Very, very close, a shift of 5% in each county to Biden for example makes it +9740. So it's going to need to be a significant increase. Wish he reported what mail in % per candidate were, not just total, if he did, we'd probably know.