The polls were actually surprisingly close. The final margin between the candidates in key states will be smaller than a reasonable margin of error for any poll.

The margin in Pennsylvania will continue to shrink, as the only place with lots of votes left to count is Philadelphia. Michigan might still flip blue, because the only place with votes to count is Detroit. Arizona is still a total coin toss, with 51k vote difference and >1200k votes left to count. Wisconsin is going to be close too, although it will likely stay red.

None of that matters when there are less ballots left to count than the margin in PA, but still, the message from the polls before election was "this will be a nailbiter", and it kind of was.