If Biden can't ace an hour long unscripted press conference, yes he should leave the race

[Prairie Gates]

25. I think you nailed the problem with the "one bad night" line

One bad night is easy to write off. The reason that people are worried is more complex: what was bad about the night was that it tended to confirm long-held suspicions and long-term attacks. It's not "one bad night" in the sense that Obama was beaten by Romney in the first debate, then cleaned his clock in the next ones. It's a night that colors the last few years. And it colors the next few months as well. Any stumble from here on out is just "further confirmation." That is, as you rightly point out, the problem. If Biden had had a "bad night" by having a few gaffes or getting zinged by some Trump one liners, it would be totally different. People would shrug that off. But the bad night played directly into GOP attacks and Dem secretly held concerns. That's why it's not just a bad night.