It will be the currently undecided voters who will pick the next President.

I don’t think so. It will be the turnout which decides. Yes, there are some who are wavering, but if you read the many articles where they are interviewed, they have mostly made up their minds and fall into one of the three camps: Biden, Trump, or “other” (mostly RFKJr). They are dithering because they are idiots, or because they think it’s cute to play “independent.”

The Trump acolytes will surely turn out in great numbers. The question is will traditional Republicans, or will they just sit out the day? Biden does not have the kind of energetic base that Trump has, so will *enough* of them get off their butts and vote? And a big question mark, although the final number will be small, is “what effect will RFKJr have” and which camp might those votes have gone to?