"the President would have to get about 65% of them to win Arizona."Okay so the gap is 12614 according to the tally in that clip.
with 50,000 left.
.65(50,000)= 32,500
.35(50,000)= 17,500
Biden = 12,614+17,500= 30,114
Trump = 32,500
trump still wins even with 65%
Which part of this are you having trouble with?