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 will host a rally in Houston next week with 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) as he seeks re-election in a race against 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).

The event will take place on Monday at the 8,000-seat NRG Arena, the president's campaign announced Monday night.

Trump pledged in August to hold a "major rally" at "the biggest stadium in Texas we can find."

An aide for the Trump campaign who asked not to be identified told The Dallas Morning News that the arena was the biggest location available on Oct. 22, and disputed that the venue fell short of expectations the president set in his August tweet.

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The Dallas Morning News reported that neighboring NRG Stadium, which holds 80,000 people, is hosting a monster truck event two days before the scheduled campaign rally, and an NFL game three days after.

The Toyota Center, home to the Houston Rockets, has a comedy show scheduled two days before the campaign event, and a concert set for the day after, the news outlet reported.

Monday's rally will be the latest event in a recent burst of campaign activity for the president. Trump has in recent weeks traveled to Tennessee, Mississippi, Pennsylvania, Ohio and Kentucky to boost Republican candidates and tout his accomplishments ahead of the midterms.

Trump will travel later this week to Montana, Arizona and Nevada in support of GOP Senate candidates locked in tight races.

The national GOP has offered support for Cruz, who has been drawn into a tight re-election race against O'Rourke. The Democrat has captured national attention with his viral speeches and eye-popping fundraising hauls in traditionally Republican Texas.

The Cook Political Report, a nonpartisan election forecaster, rates the Texas Senate race as as "toss-up."

A RealClearPolitics average of polls in the race shows Cruz with a 7-point lead in the race.

Trump and Cruz have been publicly supportive of one another after an acrimonious 2016 presidential campaign in which the two regularly exchanged insults. The president labeled Cruz "Lyin' Ted," and the senator blasted then-candidate Trump as a "sniveling coward" and a "pathological liar."