Biden ended his bid for a second term in office amid pressure from a growing number of Democrats following a series of high-profile blunders.
The US President mistakenly referred to Ukraine President Volodymyr Zelenskyy as Vladimir Putin and referred to Harris as “Vice-President Trump”.
In 2022, he fell off his bike while greeting reporters, and just last year he confused the All Blacks with British military force the Black and Tans, who terrorised Ireland.
Now he wants to pass the baton to Harris – who has been polling about the same or slightly better than Republican nominee Trump in multiple surveys.
US correspondent Dan Mitchinson says Harris hasn’t always been a favourite behind closed doors, but she’s now very likely to be nominated.
“I think they are going to have to get behind Kamala Harris. They’re going to have to get a fundraising effort behind her fast just so she can start getting some money in the war chest,” he said.
All going well she will be sworn as is the Democratic presidential candidate in August – when she will have just 11 weeks to convince America she’s up for the top job.