 If you tuned into that debate and were shocked by what you saw, you just haven't been paying attention. And I suspect most voters have been paying attention. Those who have priced in to their support for Joe Biden, his infirmity will put some upward stabilizing pressure on Joe Biden's polls. That's why I don't suspect they're going to absolutely collapse in the wake of this performance. Donald Trump has always been polling roughly on par with a slight modest advantage over Joe Biden, who is positively cadaverous.