The Texas Senate race between 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-Texas) and 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-Texas) is neck and neck, according to a new poll released Wednesday.

The 2018 Texas Lyceum Poll showed Cruz leading O'Rourke by a hair — 41 percent to 39 percent, respectively, among likely voters. That's well within the survey's margin of error of 4.67 percentage points of 441 likely voters.

That's a particularly tight margin for Texas, which has not elected a Democrat to the Senate in three decades.

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The findings come weeks after O'Rourke, a three-term congressman, reported a staggering $10.4 million fundraising haul in the second quarter of the 2018 cycle, bringing his cash on hand to just under $14 million.

That's far more than the incumbent Cruz, who raised about $4.1 million in the second quarter and has about $9.3 million in cash on hand, Federal Election Commission filings show.

Texas has normally been a reliably red state, voting for 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 over his Democratic challenger Hillary Clinton Hillary Diane Rodham ClintonFox News poll: Biden ahead of Trump in Nevada, Pennsylvania and Ohio Trump, Biden court Black business owners in final election sprint The power of incumbency: How Trump is using the Oval Office to win reelection MORE by 9 points in 2016.

Chris Wilson, a former pollster for Cruz's 2016 presidential campaign, called the poll's findings into question on Wednesday, saying that the partisan breakdown for the survey “looks nothing like Texas voters.”

As the @TexasLyceum political survey drops today, just re-upping my tweet from Monday and posting their partisan breakdown below (which looks nothing like Texas voters): #txlege #txgov #txsen https://t.co/OD1KJfrb81 pic.twitter.com/XA3qw27dRi — Chris Wilson (@WilsonWPA) August 1, 2018

While the poll shows a close race for the Senate, Republicans vying for other statewide offices fared much better.

Gov. Greg Abbott, who is seeking a second term in office, is leading his Democratic challenger Lupe Valdez 44 percent to 25 percent, respectively, among registered voters. And incumbent Lt. Gov. Dan Patrick is ahead of Democrat Mike Collier 32 percent to 23 percent among registered voters.

Among likely voters in the poll, their margins increase even more: 16 points for Abbott and 10 points for Patrick.

The Texas Lyceum poll surveyed 806 registered voters across Texas from July 9-25. That includes a subset of 441 likely voters. It has a margin of error of plus or minus 3.45 percentage points for registered voters and 4.67 for likely voters.