Julián and Joaquin Castro to campaign with O'Rourke in Texas

Julián and Joaquin Castro to campaign with O'Rourke in Texas
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Texas Rep. Joaquin CastroJoaquin CastroLive coverage: Ex-Ukraine ambassador testifies in public impeachment hearing Ex-Simpsons writer accuses Republicans of 'Sideshow Bob defense' in WaPo op-ed Democrats seize on new evidence in first public impeachment hearing MORE (D) and his brother, former Secretary of Housing and Urban Development Julián Castro, will join Rep. Beto O'RourkeBeto O'RourkeDeval Patrick enters 2020 race O'Rourke says he 'absolutely' plans to stay in politics Krystal Ball: Buttigieg is 'the boomer candidate' MORE (D-Texas) at stops along the Texas border, O'Rourke's Senate campaign team announced Thursday.

The trip with the Castro brothers will come after O'Rourke's first debate with incumbent Sen. Ted CruzRafael (Ted) Edward CruzOvernight Defense — Presented by Boeing — Stopgap spending bill includes military pay raise | Schumer presses Pentagon to protect impeachment witnesses | US ends civil-nuclear waiver in Iran Cruz, Graham and Cheney call on Trump to end all nuclear waivers for Iran Pompeo: US ending sanctions waiver for site where Iran resumed uranium enrichment MORE (R), scheduled for Friday.

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Polls have shown Cruz and O'Rourke in a tight race in deep-red Texas, and the Hispanic vote could be key to November's results. 

Cruz is getting support from 45 percent of likely Hispanic voters, 9 percent shy of the 54 percent who support O'Rourke, according to a Quinnipiac University poll released this week. 

Julián Castro, a former mayor of San Antonio, sits on the board of directors for Voto Latino, a nonprofit that encourages more political activity among Hispanics. He was considered as a potential vice presidential running mate to Democratic presidential nominee Hillary ClintonHillary Diane Rodham ClintonThe Memo: Centrists change tone of Democratic race In 2020, democracy will be decided at the margins Michelle Obama presents Lin-Manuel Miranda with National Portrait Award MORE in 2016 in part because of his appeal to Hispanic voters.

He has also said that he is considering running for president in 2020, telling CSPAN in May that he would make a decision on whether to seek the nomination after the midterms.

His brother, Joaquin, has served in the House since 2013 as a representative for Texas's 20th Congressional District, which includes part of San Antonio.