 This isn't just his political opponents saying he should get out of the race. This is worry within his own party, concern within his own party. 45 percent of Democrats saying that Biden should step aside. And obviously that performance, I think, just reinforcing it and maybe even increasing in terms of its potency. The main concern or one of the main concerns we've seen over and over when it comes to Biden, and that is his age. This is a Gallup poll.