A new poll shows that some Democratic voters are deeply concerned about whether Joe Biden is mentally fit to serve as president after a shaky debate performance on Thursday.
A CBS News Youth Gov poll released on Sunday found that 72% of registered voters believe the president does not have the mental and cognitive health to serve as president - a sharp increase from the 65% who said the same in an earlier CBS News poll.
Forty-nine percent of voters say the same of former President Donald Trump