Democrats Blame Biden's Stumbling Debate Performance on 'Preparation Overload.' Polls Indicate Voters Are Wary.

Democrats are defending President Biden after his stumbling debate performance against former President Trump left many voters cringing and his party scrambling to reshape perceptions.  A new CBS News/YouGov poll found that 72% of voters don't think Biden should run for president again, and 72% don't think he has the mental and cognitive ability to serve. Top Democrats acknowledged Biden had a "bad performance" and blamed it on "preparation overload. Biden said voters didn't react as negatively as pundits and fundraising has increased, with $33 million raised so far, over half from grassroots donors.