So? There was a global pandemic going on making voting in person risky. There was one candidate actively promoting voting by mail. There was another candidate railing against voting by mail, effectively making people who voted for him less likely to do it.
Yet here you are trying to imply that the fact this is what we saw somehow is "interesting".
It was predicted before a single vote was cast precisely because of this dynamic.
Either you are uninformed, (doubtful), or this is a dishonest OP designed to cast doubt without taking an actual position.