The "undecided" voter never cottoned on to the hypocrisy of their criticisms or concerns. You can't win over a hypocrit, because hypocrits will always apply double standards.
For example, one of the criticisms I keep hearing is that Biden/Harris didn't fix the border situatuon after four years and so therefore she's not qualified for the office.
Conveniently forgetting that the border crisis is not new, before this administration Trump also had four years and also did not fix the border problems even though he could sign executive orderst and as VP Kamala cannot, and that it is Congress who must come to agreement on border action. Not either the president or the vice president.
But Trump is qualified to be president and she is not specifically because of the border.
Tell me, how do you win over a voter like that? Even if you educate them about the border, they'll find something else to be a hyppcrit about, trot out some double standards, and here we go again. Also, the next time they listen to some right wing infotainment they'll be bamboozled back around to the same sort of thinking about the border beccause in the end, they voted to be entertained at someone else's expense.