Fasten you’re seatbelts, Ohio results won’t be known for at least 10 days after Nov 3.

—Trump is likely to lead the Election Night in-person vote

—Mail ballots accepted for 10 days
if postmarked by Nov 3. But no interim results announced before 10 days https://www.dispatch.com/story/news/politics/2020/09/27/ohio-democrats-dominating-mail-ballots-election-night-angst-ahead-as-trump-may-not-accept-results/3525808001/

A couple of caveats: Ohio is unlikely to be the tipping point state. And election officials can process absentee ballots received prior to Election Day, scan them and report results soon after polls close Nov 3.

Guide to each state’s timeline for processing absentee ballots https://www.ncsl.org/research/elections-and-campaigns/vopp-table-16-when-absentee-mail-ballot-processing-and-counting-can-begin.aspx

The 10-day delay in reporting full results will come into play if OH’s race is very tight and there is not yet a clear electoral winner nationally.

Which is not outside the realm of possibility: it’s currently a 1-point race.

A big HOWEVER: If Biden is keeping Ohio close, he ought to be comfortably winning PA, MI and WI. https://projects.fivethirtyeight.com/polls/