It is extremely rare for an election to be undecided at 60 days (Bush v. Gore was decided after 35 days, for example). If you're talking about the 2020 Presidential election, the reported counts were sufficient to determine (not "predict") the winner within about 18 hours of the last poll closures or thereabouts. It was politically convenient to spin the remaining counting, certification process, inevitable legal challenges, as "uncertainty" when there really was none.