Bernie Sanders has announced he is endorsing Joe Biden’s campaign to take on Donald Trump in November’s election.
The 78-year old pulled out of the contest to be the Democratic Party’s nominee last week, leaving Joe Biden as the only remaining candidate.
In a live split-screen webcast, former VP Joe Biden thanked his former rival for the endorsement.
Former presidential hopeful Bernie Sanders urged all Americans to unite to defeat Donald Trump.
The Vermont senator described Donald Trump as “the most dangerous president in the modern history of this country”.
He said: “Today I am asking all Americans – I’m asking every Democrat, I’m asking every independent, I’m asking a lot of Republicans – to come together in this campaign to support your candidacy which I endorse.
“It’s imperative that all of us work together.”
Joe Biden, 77, said he was “deeply grateful” for the endorsement and said he needed Bernie Sanders not just for the campaign, but to govern.
He said: “You’ve put the interests of this nation and the need to beat Donald Trump above all else. As you say – ‘Not me, us’.”
Addressing Bernie Sanders’ supporters, Joe Biden added: “I see you, I hear you, I understand the urgency of what it is that we have to get done in this country, and I hope you’ll join us.”
The former vice-president said he and Bernie Sanders were setting up policy working groups to address issues including climate change, health care and college fees.
It emerged shortly afterwards that Joe Biden had beaten Bernie Sanders in last week’s Wisconsin’s Democratic presidential primary – held amid controversy because of the coronavirus pandemic.
Bernie Sanders, a self-described “Democratic socialist”, ended his presidential campaign last week, telling supporters he could see no feasible path to get enough votes to win the nomination.
The senator became an early front-runner, popular with younger voters, and made healthcare and income inequalities key election issues.
However, he slipped behind Joe Biden in recent weeks.
Bernie Sanders, an Independent, had sought the Democratic presidential nomination before, losing out in 2016 to Hillary Clinton.