Sen. Elizabeth Warren, a hero to liberal progressives ideologically aligned with Bernie Sanders' anti-Wall Street rhetoric, endorsed presumptive Democratic presidential nominee Hillary Clinton Thursday night on MSNBC's "The Rachel Maddow Show."
"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," Warren told Maddow, saying she wants to prevent Donald Trump, "a genuine threat to this country," from entering the White House.
The endorsement, previewed by NBC News, came during an exclusive live interview beginning at 9 p.m. on the same day President Barack Obama formally backed Clinton in a video lauding her qualifications for the job.
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The Massachusetts senator also took aim at Trump over his comments about the judge overseeing a lawsuit against Trump University.
"Donald Trump is a loud, nasty, thin-skinned fraud who has never risked anything for anyone and serves nobody but himself," Warren said in a speech to a progressive legal group Thursday night. "And that is just one of the many reasons why he will never be President of the United States."