Castro, who suspended his campaign on January 2, announced his decision to back the Massachusetts Democrat in a video released Monday morning. “There’s one candidate I see who’s unafraid to fight like hell to make sure America’s promise will be there for everyone,” Castro says. “Who will make sure that no matter where you live in America or where your family came from in the world, you have a path to opportunity too. That’s why I’m proud to endorse Elizabeth Warren for President.”
The video features the pair speaking with one another in Warren’s kitchen at her Massachusetts home as her dog, Bailey, looks on.
“You know, I started my campaign off, and we lived true to the idea that we want an America where everyone counts,” Castro says. “It’s the same vision that I see in you, in your campaign, in the America that you would help bring about.”
Today I'm proud to endorse @ewarren for president.— Julián Castro (@JulianCastro) January 6, 2020
Elizabeth and I share a vision of America where everyone counts. An America where people—not the wealthy or well-connected—are put first. I'm proud to join her in the fight for big, structural change. pic.twitter.com/xDvMEKqpF3
Castro’s endorsement is an important — if a little unsurprising — get for Warren. Of the 2020 Democrats who have dropped out of the race so far, he is one of only three to have endorsed another candidate, and he is the highest profile: former Sen. Mike Gravel endorsed Sen. Bernie Sanders, and Rep. Tim Ryan endorsed former Vice President Joe Biden. As Astead Herndon at the New York Times notes, Castro’s endorsement of Warren isn’t necessarily a shock — the pair clearly share an affinity for one another. There has also been some speculation that Castro may be a potential vice presidential pick for Warren should she win the nomination.
Thank you @JulianCastro for being a powerful voice, for proposing bold and progressive plans, and for using your campaign to help people who need it now. You made this race stronger—and you will continue to be a leader in our party and our country for many years to come. pic.twitter.com/SWlsDC9HcS— Elizabeth Warren (@ewarren) January 2, 2020
Other notable Warren endorsers include the Working Families Party, Sen. Ed Markey, Rep. Ayanna Pressley, soccer star Megan Rapinoe, and writer Roxane Gay.
Warren might hope that Castro’s endorsement will inject some fresh energy into her campaign. After steadily rising in the polls over the summer, her numbers have stalled somewhat in recent months. Her fourth-quarter fundraising numbers, while strong, lagged behind Sanders, South Bend, Indiana, Mayor Pete Buttigieg, and Biden. New polling over the weekend shows Warren in fourth place in Iowa, behind Sanders, Biden, and Buttigieg, and third in New Hampshire, behind Sanders and Biden. According to a RealClearPolitics average of polls, Warren is polling at 14.4 percent nationally, behind Biden at 29.3 percent and Sanders at 19.9 percent.
Castro will travel to New York to campaign with Warren at a rally at the Kings Theater in Brooklyn on Tuesday.