Ok but this forum makes a huge deal about getting over 50% in a poll. And if you can just take chunks of the undecided and assign them out then its not that important, you just need to be in the lead.
. I chose 70-30% as a hypothetical break for the undecideds strictly because that would be an extremely favorable outcome for Biden. The point is that even if Biden kills it with the remaining undecideds, he still performs worse in this state than he did last time, and the only way Trump would stay at 37-38% is if he gets literally 0% of the undecideds (which is impossible)