U.S. Senator Elizabeth Warren endorsed former Vice President Joe Biden for president on Wednesday, giving the presumptive Democratic front-runner another high-profile backing from one of his former rivals.
"In this moment of crisis, it's more important than ever that the next president restores Americans' faith in good, effective government – and I've seen Joe Biden help our nation rebuild," Warren wrote in a tweet. "Today, I'm proud to endorse Joe Biden as President of the United States."
Warren, a liberal who ended her own bid for the White House last month, gives Biden his third major endorsement of the week, as he looks ahead to November's contest with Republican President Donald Trump.
Biden's chief rival, Bernie Sanders, endorsed him on Monday after suspending his campaign last week, while former President Barack Obama backed Biden on Tuesday, breaking his silence to help his former vice president’s efforts to unite the party and energize its voters ahead of the November 3 election.
Like Sanders' endorsement, Warren's support for Biden could help him make inroads with the party's left wing.
After staying on the sidelines as a record high number of Democratic candidates fought for the right to take on Trump, Obama gave his support to Biden in a video message.
“Choosing Joe to be my vice president was one of the best decisions I ever made, and he became a close friend. And I believe Joe has all the qualities we need in a president right now,” Obama said in the video.
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The swell of support around Biden gives him a dose of energy and attention at a time when the American public is largely focused on the government response to the novel coronavirus pandemic, which has pushed the presidential race out of the spotlight.
“Because he is so popular and the comparison between President Trump and Barack Obama is so stark, it will be such a unifying, motivating factor,” said Terry McAuliffe, a former Virginia governor and longtime party official.
Obama had publicly remained neutral as Biden, who served him for eight years in the White House, stumbled in early 2020 Democratic nominating contests and then swept to victory in a series of primaries in March.
Trump’s re-election campaign had painted Obama’s endorsement as overdue, suggesting the former president was reluctant to back his former No. 2. But Obama had vowed to stay out of the fractious Democratic race and was only free to endorse once Sanders bowed out last week.
Reuters contributed to this report