General consensus of the Polls is that Biden and Trump are within a point of each other in the NPV.
However, we have yet to see a poll where Trump gets of 47% of support which is daunting task for him to do. If Trump does manage to win, it’s not because he is gaining supporters, it’s because Biden has lost a considerable amount of voters.
If you look at polls that ask for retrospective job approval for Trump as President that tops out at 47%-48% which
1. Is substantially higher than Biden's current JA
2. Likely Trump's absolute ceiling.
There is next to no reason to vote for Trump if you think he is awful, he was a bad President, AND his presidency was a disaster.
The double-haters he can reach are those who thought his Presidency was quite good but hate him.