Joe Biden is taking advice from his son, Hunter. This does not inspire confidence | Arwa Mahdawi

The president could have made a dignified exit from the race for the White House - but his family has apparently implored him to stay put. Now he seems determined to see things through to the bitter, messy end

The moment Joe Biden walked off the debate stage last Thursday night, the clock started ticking. There was a small window of time after the president's disastrous performance in which he could have made a dignified exit from the 2024 race. He could have called a press conference on Monday morning and said he had carefully assessed the calls made by the New York Times editorial board and high-profile pundits and political consultants urging him to step down. He could have said he had decided it was the best thing to do for the future of the US and democracy itself. Biden would have looked selfless; a man putting country before ego. The Democratic party could have gone swiftly to work, rallying behind a replacement.

I am not saying this scenario would have been simple. Of course not. It would have been a mess! But not as much of a mess as the situation we find ourselves in now. The window for a dignified exit has passed. Doubts about Biden's cognitive fitness, meanwhile, are only increasing. According to a CBS News/YouGov poll, 72% of registered voters don't think Biden has the mental and cognitive health to serve as president; the same percentage don't think he should be running for president. Among Democratic registered voters, 46% don't think he should be running for president, up from 36% earlier this year.