Skip to main content
Texas 2020 Elections

Joaquin Castro endorses Cristina Tzintzún Ramirez in crowded primary to challenge John Cornyn

The endorsement is among the biggest yet in the 12-way primary, and it comes as early voting begins Tuesday.

Cristina Tzintzún, a Democratic candidate for U.S. Senate, speaks at event for democratic supporters at Collin County Commun…

Texas 2020 Elections

The last day to register to vote in Texas is Oct. 5. The last day to request a ballot to vote by mail is Oct. 23. Early voting starts on Oct. 13 and ends Oct. 30. Learn more about voting by mail, check out our guide on voting during the pandemic and bookmark your Texas ballot.

 More in this series 

U.S. Rep. Joaquin Castro, D-San Antonio, is endorsing Cristina Tzintzún Ramirez in the crowded Democratic race to challenge U.S. Sen. John Cornyn, R-Texas, providing one of the biggest endorsements yet in the primary.

"To replace [Cornyn], we need someone who understands the Texas of today and who has a positive vision for our future," Castro said in a statement. "I have a tremendous amount of respect for each of our Democratic candidates in this race, but with her extensive track-record working on behalf of Texans to secure living wages, protect immigrant communities, and engage our young and diverse electorate, I'm proud to support Cristina Tzintzún Ramirez."

Tzintzún Ramirez is a progressive organizer who co-founded the Workers Defense Project and founded Jolt, which seeks to mobilize Latino youth.

Castro's endorsement comes the same day early voting begins for the primary, which features 12 candidates and is all but guaranteed to go to a runoff. A University of Texas/Texas Tribune Poll released Monday suggested that MJ Hegar is the favorite to advance to an overtime round, but the No. 2 spot is up for grabs.

Castro, chairman of the Congressional Hispanic Caucus, is the most prominent Texas Democrat yet to pick sides in the primary, and his endorsement may be the most significant besides that of the Democratic Senatorial Campaign Committee, which backed Hegar in December. Another candidate, Dallas state Sen. Royce West, has the most congressional endorsements in the primary. Those four endorsements come from Reps. Sylvia Garcia of Houston, Eddie Bernice Johnson of Dallas, Al Green of Houston and Marc Veasey of Fort Worth.

Castro considered running against Cornyn last year but opted against it. Cornyn's campaign taunted Castro over that decision in responding to his endorsement of Tzintzún Ramirez.

"It's no surprise one of the most liberal congressmen in Texas is backing the most progressive candidate in this race," Cornyn campaign manager John Jackson said in a statement. "Congressman Castro is desperate to appear relevant after being too scared to run against Senator Cornyn himself."

Last week, Castro's mother, the civil rights activist Rosie Castro, endorsed Tzintzún Ramirez. His brother, the former presidential candidate Julián Castro, held open the possibility he, too, could endorse in the primary during a Thursday interview with The Texas Tribune.

Disclosure: The University of Texas has been a financial supporter of The Texas Tribune, a nonprofit, nonpartisan news organization that is funded in part by donations from members, foundations and corporate sponsors. Financial supporters play no role in the Tribune's journalism. Find a complete list of them here.

Quality journalism doesn't come free

Yes, I'll donate today