Looks like this is gonna be a record turnout election and then some, which usually favours Dems. Apparently Philadelphia has already reached 530,000 voters by 11.30am and their total was 760,000 in 2020.
We don't know.
I'd guess after, others might guess before. Ultimately (unless they issue a clarification) we may not find out until 5:45ish on Thursday next week.