I think at midnight the map looks like this, with TX, GA and FL being listed as "too close to call" as they try to finish counting all their mail in ballots, needing to get through them all because of how close the vote is, while WI, MI and PA are being listed as "too early to call" as they haven't even begun to get through their mail in ballots:
I think Trump nevertheless claims victory before midnight, declaring that "people are saying" that he has already won all 6 states, the Democrats know it and they are just holdiong up the results and trying to steal the election. Only FOX News covers his declaration of victory, while the other networks refuse to cover it. FOX News, while covering his declaration, resists actually calling the election for him, instead running with a cagey "Trump victory?: President declares victory as election results still in question" headline. Trump tweets in outrage at FOX News and the "dishonest media" for failing to announce he is the winner.
As soon as one of those states goes for Biden he would be declared the winner, however Biden will need to win FL or GA to keep it out of the SCOTUS. If his win is dependent on WI, MI, PA, NC or TX, its going to be decided in the SCOTUS, or at a minimum they will be asked to intervene.