I feel like some are taking an analytical approach to the Biden gaffe, which makes sense - everyone here is intelligent and educated. Some voters do not take an analytical approach in determining who to vote for or whether or not they will vote at all. They vote if they have time and feel motivated and vote for whomever they like better. That's why these October surprises (that shouldn't really move the needle) do in-fact move the needle. And if it only motivates 1% of voters who otherwise would not have voted in Penn., you may have a different President elect.