The former US vice president, who is seeking the Democratic Partys nomination for the 2020 election, would be 78 at the start of his first term and 82 if he won a second.
Politico reported that chatter about making a one-term pledge had re-emerged in the wider Biden adviser world given his continued strength in nationwide polling.
The article referenced four people who “regularly talk” to Mr Biden saying it would be virtually inconceivable for him to run for re-election.
No candidate in their eighties has ever won the White House.
The idea would be for Mr Biden to promise to hand over to a more youthful vice president after his first term, effectively ushering in the next generation of Democrat leaders.
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