You shouldn’t read too much into the polls regarding trump or Biden. Everyone that turned out in 2020 to vote trump out will turn out again to make sure that he does not get reelected. Bidens low popularity ratings are because everybody who watches Fox News hates him and a quarter of his supporters are disappointed that he hasn’t gone far enough to the left. His supporters are not going to vote for Trump. They will set aside any disappointment they may have for Biden and vote for him on election day. Trump has no chance of winning the election, even if he would’ve managed to get the nomination, which probably isn’t going to happen either.