Rep. Joaquin Castro Joaquin CastroPompeo accused of stumping for Trump ahead of election Florida Democrat asks FBI to investigate anti-Semitic, racist disinformation Hispanic Caucus members embark on 'virtual bus tour' with Biden campaign MORE (D-Texas) says energy among Hispanic voters ahead of the midterm elections has to do with more than just opposition to President Trump Donald John TrumpSteele Dossier sub-source was subject of FBI counterintelligence probe Pelosi slams Trump executive order on pre-existing conditions: It 'isn't worth the paper it's signed on' Trump 'no longer angry' at Romney because of Supreme Court stance MORE, saying that many in the Hispanic community want to ensure there is an “infrastructure of opportunity” for all Americans.

Responding to a question from Hill.TV “Rising” co-host Krystal Ball, Castro said that opposition to the president contributes partly to the energy of Hispanic voters, but that is just part of their focus.

“I think this is a big part of it, sure. I think when the president kicked off his campaign a few years ago and called Mexican immigrants criminals and rapists — there’s a lot of pushback against that,” Castro said.

“But it’s not just that — it’s to make sure that there’s still an infrastructure of opportunity that allows people to pursue their American dreams, and the Hispanic community wants to make sure that exists for everyone,” he added.

Castro, who is the first vice chairman of the Congressional Hispanic Caucus, also said he’s hopeful that this year might be the year Democrats turn Texas blue, predicting an upset win by Rep. Beto O'Rourke Beto O'RourkeJimmy Carter says his son smoked pot with Willie Nelson on White House roof O'Rourke endorses Kennedy for Senate: 'A champion for the values we're most proud of' 2020 Democrats do convention Zoom call MORE (D) in his Senate race against Sen. Ted Cruz Rafael (Ted) Edward CruzThe Hill's Morning Report - Sponsored by Facebook - Trump previews SCOTUS nominee as 'totally brilliant' Cruz blocks amended resolution honoring Ginsburg over language about her dying wish Trump argues full Supreme Court needed to settle potential election disputes MORE (R).

“I think Beto O’Rourke ends up — and I’ve told him all this — somewhere between 48 percent and 52 percent, and I think more and more it looks like he’s going to pull this thing out,” he said.

Polls show a tight Senate race between O’Rourke and Cruz in the normally reliably red state.

Cruz has just a 3-point lead over O’Rourke, according to RealClearPolitics, and last month, the Cook Political Report shifted the senate race from “likely Republican” to “lean Republican.”

Republicans aren’t taking these polls lightly.

The No. 2 Senate Republican on Monday warned that Cruz faces a serious threat from O’Rourke.

“We’re not bluffing, this is real, and it is a serious threat,” Senate Majority Whip John Cornyn John CornynQuinnipiac polls show Trump leading Biden in Texas, deadlocked race in Ohio The Hill's Campaign Report: GOP set to ask SCOTUS to limit mail-in voting Liberal super PAC launches ads targeting vulnerable GOP senators over SCOTUS fight MORE (R-Texas) told Politico.

Experts say getting the deep-red state to favor Democrats really comes down to whether the state’s young and growing Hispanic population registers to vote and shows up at the polls on election day.

Texas has the second largest Hispanic population in the U.S. and is home to nearly 20 percent of all Hispanics in the nation.

As Castro points out, Texas voter participation ranks low across the board, especially among young Hispanic voters.

But the Texas congressman emphasized the growth of grass-roots organizations, like the Texas Organizing Project, that are mobilizing young Hispanic voters.

“What’s different about this year is that you have a bunch of organic groups like the Indivisible groups, for example, but also groups like the Texas Organizing Project that are finally actively working in most parts of Texas now to register folks to vote and also to mobilize them,” he told Hill.TV.

— Tess Bonn