Elizabeth Warren has endorsed Joe Biden for president.

The Massachusetts senator made the announcement on Wednesday morning, following endorsements by former President Barack Obama on Tuesday, and Senator Bernie Sanders on Monday.

“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. Today, I’m proud to endorse Joe Biden as President of the United States,” she said on Twitter.

In an accompanying video, Senator Warren speaks about Mr Biden’s life story and how his experiences “animate the empathy he extends to Americans who are struggling no matter what their story.”

Speaking of the task facing Mr Biden should he win November’s election, Ms Warren refers to his experience in rebuilding the nation after the global financial crisis through the implementation of the Recovery Act in 2009.

“I saw him up close, doing the work, getting in the weeds, never forgetting who we were all there to serve,” she said.

Senator Warren ended her own campaign for president in March, and since then has spoken multiple times to Mr Biden about policy issues, according to Reuters.

Following the departure of both Ms Warren and Mr Sanders from the race, the Biden campaign has moved left in an effort to attract their supporters.

In terms of policy, this has meant a shift in approach towards student debt and Medicare, as well as adopting Senator Warren’s plan on bankruptcy — surprising since the two had previously clashed over the issue.

In her endorsement video, she praised Mr Biden’s ability to adapt.

“One thing I appreciate about Joe Biden is he will always tell you where he stands,” she said.