https://www.politifact.com/article/2020/nov/04/fact-checking-avalanche-wisconsin-election-misinfo/
CLAIM: "Wisconsin took a break, and when they returned, Biden coincidentally came back ahead by 100k."
This is one of several viral claims that key states took a break from voting in some form on election night.
And it’s simply not true.
Election officials worked through the night in Wisconsin to tally the unprecedented numbers of mail-in ballots, which under state law they were not allowed to start counting until Election Day.
"Our municipal and county clerks have worked tirelessly throughout the night to make sure that every valid ballot is counted and reported accurately," Meagan Wolfe, the director of the state Elections Commission, said in a news conference the morning after the election.
The jump in Biden’s tally came when the central count facility in Milwaukee completed its tally of the mail-in votes around 3:30 a.m., reporting those all at once. That led to a long-predicted spike in Biden’s favor since Democrats are more likely to use vote absentee and Milwaukee is a heavily Democratic area.