I also don’t know that polling errors are going to be the issue. Polling is based on likely and previous voters. Massive turnout and lots of first time voters isn’t something polling models can really figure.
It can’t be months. The electoral college meets December 14th.
Most mail in ballots are machine readable. And in most states both early votes and mail in votes are counted ahead of time. While those ballots have to be processed/approved by hand before they can be counted, even in Texas counting starts before polls close on election day and is done by machine.
Delays on that front come with come with large numbers of votes arriving on or after election day and GOP fuckery around whether those can be counted.
Hand counting is mostly a plan C for tight districts where multiple machine counts don’t give a clear answer.
