MAGA, Inc., the super PAC aligned with President Donald Trump, is pouring $10 million into television and digital advertising in the Texas Senate race, according to a Saturday filing with the Federal Election Commission.

The buy marks the group's first significant spending in a premier general election contest and signals that a once-safe Republican seat in Texas may now be within reach for Democrats, thanks to the candidacy of James Talarico, a 37-year-old state representative. Texas Attorney General Ken Paxton is the Republican nominee. Trump's endorsement helped Paxton defeat the incumbent, Sen. John Cornyn, in a May primary runoff. No Democrat has won a Texas Senate seat since 1988, making the state's appearance on the competitive map this cycle a notable shift for a seat Republicans have long treated as secure.

Trump's public disapproval ratings over the economy and the Iran war have weighed on many Republican candidates this cycle. In midterm elections, voters typically turn against the party that controls the White House, and Democrats are hoping to capture both the House and Senate — with Texas serving as a symbolically powerful indicator of how the political map may be expanding this year. Outside groups like MAGA, Inc. can raise and spend unlimited sums under federal rules, which is why such ad reservations often rival or exceed the spending of the campaigns themselves in high-profile races.

The new ads aim to make taxes a dominant issue at a time when many voters remain concerned about persistent inflation. Talarico has supported higher taxes on wealthier households, and the two ads portray him as seeking tax hikes more broadly, while claiming Paxton would deliver tax breaks to first-time homebuyers and families with children.

Context on the tax debate: The major legislation Trump signed into law last year enhanced and extended many of the expiring tax breaks from his 2017 overhaul, but it also increased budget deficits, contributing to higher interest rates on the national debt. Trump has additionally raised tariffs — taxes on imports — in an effort to generate revenue.

"High Tax Talarico wants to take money out of Texans' pockets. MAGA Inc. is going to ensure Texas knows about Talarico's radical policies and elects Ken Paxton to the U.S. Senate," Alex Pfeiffer, a spokesman for MAGA, Inc., said in a statement Saturday.

Talarico campaign spokesperson JT Ennis pushed back against the ads' claims that the Democrat is pursuing broad tax increases.

"Billionaire-backed dark money groups are lying about James Talarico because they're scared of the people-powered movement we're building to fix this broken, corrupt political system," Ennis said in a statement. "James was proud to vote for the largest property tax cut in Texas history and has consistently voted to cut taxes for working Texans."

MAGA, Inc. holds at least $400 million in campaign funds that GOP candidates have been waiting for the president to deploy.

"I'm going to spend whatever amount of money necessary to try and help us," Trump told reporters on Friday. The president stressed that these were his funds to allocate as he sees fit. "This is my money," Trump said, adding that it was "separate" from funds controlled by the Republican National Committee. He also said he could hold back some of the money until the 2028 elections "if that's what I want." Trump is constitutionally barred from seeking a third presidential term.

Trump backed Paxton despite the Texas politician's public scandals, though he acknowledged this past week that Paxton is not the most telegenic candidate.

"It's so insulting to him, but I might as well say it: You might not like the way he looks, you might not love his look, you might not love his television interviews, but he was the best attorney general in the country, perhaps," Trump said Wednesday at a White House event on the midterm elections.

Republicans in battleground states have been urging the president to open his wallet and deploy part of the enormous war chest he has amassed. James Blair, who runs the president's midterm political operation, tried earlier this week to tamp down growing concern and impatience.

"When it's all said and done, all Republicans, at least, will be quite pleased and relieved at the support they find," Blair said at an Ohio energy summit. The Texas reservation — one of the largest single outside investments reported so far this cycle — suggests that deployment has begun, and future FEC filings will show whether the group expands into other contested Senate and House races.

This story was originally featured on Fortune.com.