The theory is this is when the transfer votes to Biden came from.
I know this is going to sound weird, but do you know of, or have you heard of even anecdotally, a person who goes in to vote in a general election (after having been subject to a big “GO VOTE” campaign at their place of employment for example), and this person is not a thoughtful or deliberate voter, he (or she) generally avoids the primary and midterm elections, and does not study the downballot races or the state propositions or local measures, but votes for one thing only and that is for the office of president? Just that one office? And then he can grab his “I voted” sticker to show his neighbors or boss. Does that even sound reasonable?