Biden has increased his lead over Trump which means it’s pretty much over; Biden wins. Even if there are a lot of mail-in ballots to be counted, they’re only going to help Biden increase his lead because let’s face it, more people who voted by mail-in ballot voted for Biden than Trump, so as those get counted, it’s not going to help Trump. It’s not really a “nail-biter” at all, if anything, it’ll be at least a little bit of a landslide (which is just as well because it’s not enough for Trump to lose, he has to lose by a lot to deflate his ego because it’s gotten so big it actually has a gravitational pull).