US President Joe Biden says he dropped out of his re-election bid because he feared that the intraparty battle over his candidacy would be a "real distraction" for Democrats and that his highest priority was to defeat Donald Trump in November.
In his first interview since quitting the race, Mr Biden, 81, said he had “no serious problem” with his health. He blamed his poor debate performance on being sick at the time, and brushed off concerns about his age and mental acuity.
The US president pledged to campaign for Kamala Harris saying he was going to do whatever his vice-president "thinks I can do to help most".
“We must, we must, we must defeat Trump,” he told US broadcaster CBS News.
Mr Biden said if he had continued his campaign, the presidential contest would have gone “down to the wire”.
"A number of my Democratic colleagues in the House and Senate thought that I was going to hurt them in the races," he said.
"And I was concerned if I stayed in the race, that would be the topic. You’d be interviewing me about, Why did Nancy Pelosi say, why did so — and I thought it’d be a real distraction.”
Former House speaker Nancy Pelosi was widely reported to have led the push to oust Mr Biden - a claim she has not exactly denied - after his halting debate performance against Trump on 27 June.
During the pre-recorded interview broadcast Sunday, Mr Biden misspoke several times but generally seemed more coherent than during the live televised debate. He chalked up his poor debate performance to illness – previously he’s also mentioned jet lag and lack of rest as factors.
As pressure continued to ratchet up, he announced his exit from the race on 21 July.
A potential battle to replace him at the top of the Democratic ticket never materialised and party support swiftly coalesced around Vice-President Harris, who has so far outperformed Mr Biden in opinion polls.
The president has said he intended to be a bridge to the next generation when he ran for the White House in 2020.
"When I ran the first time, I thought of myself as being a transition president. I can't even say how old I am. It's hard for me to get it out of my mouth.”
