There's growing concerns about Joe Biden's capabilities ahead of the 2024 election.

A couple of unfortunate weeks have led to Democrats reconsidering a second term for the President, and Vice Presidents Harris has expressed interest in taking over.

US correspondent Dan Mitchinson says it's unlikely Harris will be ready to step in as the next nominee.

"California Governor Gavin Newsom is in the wings- but he has to tread carefully. He's got his eye on four years down the road."

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