Nearly three-fourths of voters doubt President Joe Biden is fit to serve after his shaky debate performance last week, according to a new poll.

CBS News and YouGov found 72% of registered voters do not believe Biden, 81, has the mental and cognitive health to be president while 27% said that he does.

For months before the debate, the nation's voters repeatedly expressed doubts over whether Joe Biden had the cognitive health enough to serve as president.

Today, those doubts have grown even more: now at 72% of the electorate, and now including many within his own party. pic.twitter.com/9QB10d8UYo

— CBS News Poll (@CBSNewsPoll) June 30, 2024

Among Democratic registered voters, 41% say Biden does not have the capacity to do the job, a 10-point increase over the 29% who said the same earlier in June.

Half of registered voters said former President Donald Trump, 78, does have the mental and cognitive health to serve as president while 49% said that he does not.

Three weeks ago, on June 9, CBS News and YouGov found more registered voters viewed Biden as being capable of performing the duties of commander in chief.

At the time, 65% of respondents did not think Biden was fit to serve while 35% said that he did possess the mental and cognitive health for the job.

Democrats are reportedly panicking after the debate on Thursday and there is a push, including by The New York Times’ editorial board, for Biden to leave the race.

A Biden campaign fundraising email included a graphic comparing how Biden polls against Trump to other Democrats, including Vice President Kamala Harris.

A Biden campaign fundraising email tonight included a polling graphic comparing Biden vs. Trump to potential alternatives, including

Harris
Buttigieg
Booker
Newsom
Whitmer
Klobuchar
Shapiro
Pritzker

The inclusion of the information feels more revealing the info itself. pic.twitter.com/EoIFfS0Iou

— Shane Goldmacher (@ShaneGoldmacher) June 30, 2024

The message claimed the alternatives were not as likely to win, but the chart shows Harris, California Governor Gavin Newsom, and others polling similarly to Biden.

CBS News and YouGov found 72% of registered voters say Biden should not be running for president, a 9-point jump over the 63% who said the same in February.

Among Democratic registered voters, 46% say Biden should not be running for president, a 10-point increase over the 36% who said the same in the earlier poll.

Most voters agreed Biden should not be running because of his age, decisions he might make in office, his record as president, and ability to campaign effectively.

Ultimately, 55% of Democratic registered voters said Biden ought to continue running when asked if he should be the nominee while 45% said he should step aside.

CBS News said its new poll is based on a national sample of 1,130 registered voters contacted from June 28-29 and has a margin of error of plus-or-minus 4.2 points.