Earlier quoted context omitted.
The premise of this analysis appears to be that mail-in ballots are a uniform sampling of Democrats and Republicans. But of course, in 2020, that's not at all the case; the Republicans made a campaign issue out of not voting absentee, and of attempting legally to reject absentee ballots under a number of conditions. As a result: mail-in ballots are sharply more Democratic than Republican this year. Further, any analy…
Sure, but the analysis is supposedly showing even vote-by-mail trending toward R in other states, explained by the hypothesis that mail from more outlying areas tended to arrive later. The observed discontinuities in the contested states could be explained simply by the sequence in which these states processed their mail-in ballots (i.e. ballots mailed from cities were processed later), but the fact that so many of t…
Again, what you really saw here was that the election day vote trended sharply more R, because R voters were encouraged not to use mail-in votes, while the entire D campaign apparatus was --- like it has been since Obama --- designed to get people to commit their votes early with mail-ins. The mail-ins took longer to count, because unlike in Florida, they couldn't be counted early. So what you were watching as time went on was large tranches of mail-in ballots that took forever to count coming in from D-heavy areas (or from areas where Biden outperformed Clinton, and where the mail returns were, like everywhere, more D than the election day returns).