Paxton vs. Cornyn isn’t just another primary. It’s a referendum on whether the GOP’s future belongs to bomb-throwing insurgents or old-school dealmakers — and the result could hand Democrats a Senate seat they haven’t held in decades. Early voting starts today.

Somewhere in Austin, John Cornyn is looking at a $16 million war chest and wondering why this race is even close. And somewhere in Little Elm, Ken Paxton is speaking at a grassroots conservative meeting, asking the crowd if anyone can name a single thing Cornyn has accomplished in 40 years of politics. According to Paxton, nobody ever has an answer. “That’s pathetic,” he told them Friday. “Texas should do better.”

That’s the vibe heading into the most important Senate primary runoff in the country. Early voting in Texas opened this week and runs through Friday — with no early voting on the weekend before Election Day, May 26th. If you’re a Texas Republican and you care about this one, you’ve got a narrow window.

And you should care. Because whoever wins this runoff doesn’t just become the Republican nominee for Senate — they walk into a general election against Democrat James Talarico that polls suggest is genuinely competitive. Uncomfortably so.

Ken Paxton TX Attorney General, 3 terms Poll avg (RCP):45.5%

Ad spend (runoff):~$4M Trump endorsed:No (yet)

VS

John Cornyn US Senator, 4 terms Poll avg (RCP):42.3%

Ad spend (runoff):~$16M Washington GOP pick:Yes

Here’s the bizarre position Trump finds himself in. He told reporters back in March he’d make an endorsement. Then he didn’t. On Friday he suggested he won’t endorse until after the runoff is over — which effectively means he’s staying out of it entirely. “I like them both,” he said, which in Trump-speak usually means he doesn’t want to be seen backing a loser.

“The differences on the issues are minimal — but the differences in style are dramatic.” — SMU Prof. Matthew Wilson

That’s the key insight from SMU political science professor Matthew Wilson, who put it plainly: this isn’t really an ideological fight. Both men are conservatives. Both are pro-Trump on policy. What separates them is temperament. Cornyn is the old-guard institutionalist — methodical, funded, cautious. Paxton is the MAGA wrecking ball — charismatic to his base, radioactive to everyone else.

Cornyn’s campaign knows the Paxton playbook better than anyone, and they’re using it against him. The ads aren’t about policy — they’re about Paxton’s FBI referral, the whistleblower lawsuit his own senior staff filed against him, the marital scandals. Cornyn told reporters Paxton “has disqualified himself by his bad judgment and bad choices and basically lying to Texas taxpayers.” That’s not subtle. That’s a closing argument.

Paxton’s counter is just as blunt: Cornyn has been in politics since 1984 — literally the year of the Orwell novel — and has nothing to show for it. His campaign is running ads featuring cultural touchstones from that era to hammer the point home. It’s actually a decent ad. Nobody under 50 is excited about re-electing the guy who’s been there since Ghostbusters came out.

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Now here’s the part that’s keeping Republicans in Washington up at night. Recent statewide polling shows Democrat James Talarico leading both Cornyn and Paxton in a hypothetical November matchup. The UT Texas Politics Project had Talarico up 7 over Cornyn and 8 over Paxton. Even skeptics of that poll — and Wilson called it “a bit of an outlier” — acknowledge the race looks like a dead heat or slight Democratic advantage right now.

Texas hasn’t sent a Democrat to the Senate since 1988. The seat hasn’t seriously been in play since Beto O’Rourke came within 2.6 points of Ted Cruz in 2018 and made the whole country pay attention. Cruz himself said this week he’s “concerned about the midterms” and called the fight for Texas “real.” That’s not nothing. Ted Cruz doesn’t do false modesty.

The math is pretty simple, and Republicans know it: Paxton’s ethical baggage gives Talarico a readymade attack line that plays well outside the base. Cornyn is safer in November — but in a MAGA primary, “safer in November” is almost an insult. His challenge is turning out the kind of moderate, pragmatic Republicans who don’t usually show up for runoffs.

Paxton’s people are the diehards. The activists. The ones who will drive three hours to vote in a primary runoff on a Tuesday in May. That’s the structural advantage he has — and it’s why, despite Cornyn’s $16 million ground game, this race is genuinely too close to call.

Win or lose, this is Cornyn’s last election either way. Wilson said as much. If he wins a six-year term, he’ll be well past 80 when it ends — it’s almost impossible to imagine him running again. If he loses, he’s done. For Paxton, a loss likely ends his political career too. A win, and he’s probably around for a long time.

Two Texas giants. One Senate seat. Early voting ends Friday. And the whole country is watching.

Other Texas runoffs to watch — May 26

R — ATTY GENERAL

Mayes Middleton vs. Chip Roy

D — ATTY GENERAL

Joe Jaworski vs. Nathan Johnson

D — LT. GOVERNOR

Vicky Goodwin vs. Marcos (Union)

D — TX-33 CONGRESS

Julie Johnson vs. Colin Allred