Sen. Elizabeth Warren Elizabeth WarrenBiden's fiscal program: What is the likely market impact? Warren, Schumer introduce plan for next president to cancel ,000 in student debt The Hill's 12:30 Report - Presented by Facebook - Don't expect a government check anytime soon MORE (D-Mass.) formally endorsed Hillary Clinton Hillary Diane Rodham ClintonJeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Momentum growing among Republicans for Supreme Court vote before Election Day Warning signs flash for Lindsey Graham in South Carolina MORE's presidential bid Thursday after months of remaining neutral in the Democratic primary.

“I’m ready,” Warren told The Boston Globe Thursday. “I’m ready to jump in this fight and make sure that Hillary Clinton is the next president of the United States and be sure that Donald Trump Donald John TrumpUS reimposes UN sanctions on Iran amid increasing tensions Jeff Flake: Republicans 'should hold the same position' on SCOTUS vacancy as 2016 Trump supporters chant 'Fill that seat' at North Carolina rally MORE gets nowhere near the White House.”

Warren said she's getting behind Clinton because "she’s a fighter, a fighter with guts."

"I am ready to get in this fight and work my heart out for Hillary Clinton to become the next president of the United States and make sure Donald Trump never gets any place close to the White House," Warren said on MSNBC's "The Rachel Maddow Show" Thursday night.

Warren said Democrats are often too soft and willing to compromise while waiting patiently for change, but the party needs a leader like Clinton who can fight for it.

"Having a female fighter in the lead is exactly what this country needs," Warren said.

"For 25 years ... the right wing has been throwing everything they possibly can at her. What she's done is she gets back up, and she gets back in the fight.





"You also have to be willing to throw a punch, and there are a lot of things people say about Hillary Clinton, but nobody says she doesn't know how to throw a punch."

Warren also heaped praise upon fellow Sen. Bernie Sanders Bernie SandersNYT editorial board remembers Ginsburg: She 'will forever have two legacies' Two GOP governors urge Republicans to hold off on Supreme Court nominee Sanders knocks McConnell: He's going against Ginsburg's 'dying wishes' MORE, saying he has helped bring in millions of voters to the Democratic Party.



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"He brought millions of people into the political process. Millions into the Democratic Party, and for me, that's what this is all about," Warren told Maddow. "I also think what Bernie Sanders did was just powerfully important. He ran a campaign from the heart, and he ran a campaign where he took those issues and really thrust them into the spotlight."

The move could ease the minds of progressive voters who are reluctant to get behind Clinton and help unify the Democratic Party heading into the general election.

Warren, a liberal stalwart and favorite of progressive voters, has been a rumored vice presidential pick for Clinton, though she hasn't explicitly expressed interest in the position. But when asked by Maddow if she thinks she's capable of doing the job, she responded, "Yes I do."

Still, Warren has taken on a guard dog role for the Democratic Party in recent weeks, biting back at presumptive Republican nominee Donald Trump over his policy positions and vowing to keep his "toxic stew of hatred and insecurity" out of the White House.

Just before her endorsement, she delivered a scathing speech in Washington, calling Trump a "thin-skinned, racist bully."

Warren's backing follows a long-awaited endorsement from President Obama Thursday in which he called Clinton one of the most qualified candidates ever to run for office.

"I know how hard this job can be. That's why I know Hillary will be so good at it. In fact, I don't think there's ever been someone so qualified to hold this office," he said in a video.

And Vice President Biden also signaled his endorsement of Clinton, saying in a speech that she would be the next president, "God willing."

Sanders has yet to concede and in a rally in Washington, D.C., Thursday after a meeting with Obama, he made no mention of Clinton or his quest to flip superdelegates but didn't deviate from his usual campaign speech.

Clinton and Sanders will face off in the final primary Tuesday in D.C.