Nate Silver is just reiterating what I said a while ago. You can't really go off of poll numbers from a Presidential debate. You really don't know what's going to happen until Election day. Biden looked the same way against Trump, and he barely won on the day of election. I really don't go off of these numbers.
Nate Silver's Warning on Kamala Harris' Post-Debate Gains (msn.com)​
Nate Silver's Warning on Kamala Harris' Post-Debate Gains (msn.com)​