Cornyn vs. Paxton: The Texas GOP Civil War That Could Hand Democrats the Senate

Neither candidate hit 50% in the March 3 primary. Now a four-term senator and an impeached attorney general are headed to a May 26 runoff. Democrat James Talarico is already leading both in early polls. Trump hasn't endorsed either. Every day this fight drags on is a gift to Democrats.

How We Got Here

The March 3 Texas primary was supposed to be a formality for Republicans. John Cornyn, the four-term incumbent and former Senate Majority Whip, has held his seat since 2002. Texas hasn't elected a Democrat to statewide office since 1994. This should have been easy.

It wasn't. Attorney General Ken Paxton, running from Cornyn's right flank, siphoned enough votes to prevent anyone from reaching the 50% threshold needed to avoid a runoff. Rep. Wesley Hunt finished a distant third and conceded. Now Cornyn and Paxton face each other again on May 26 — extending the Republican primary season by nearly three months while Talarico consolidates Democratic support and pivots to the general.

The Cornyn Problem

Cornyn's vulnerability is simple: in a party that demands absolute loyalty to Donald Trump, he has a paper trail of insufficient devotion. In 2023, he suggested Trump was not the most electable presidential candidate for 2024. That comment has haunted his campaign like a ghost. In a party where a single disloyal remark can end a career, it was enough to open a lane for a challenger.

Cornyn was so uncertain of his primary night that he didn't even hold an election party. Instead, he spoke to reporters in Austin, making the case that a Paxton nomination would saddle Republicans with, in his words, "a dead weight at the top of the ticket." He's not wrong — but the fact that a four-term incumbent has to make that argument at all tells you everything about where the Texas GOP is.

The Paxton Problem

Ken Paxton is simultaneously the most electable and most unelectable candidate in the Republican field, depending on which electorate you're asking about.

Among Republican primary voters, Paxton is a MAGA folk hero — the AG who filed lawsuits against the Biden administration, fought vaccine mandates, and challenged the 2020 election results. He was impeached by the Republican-controlled Texas House in 2023 on corruption charges and acquitted by the Republican Senate. He still faces unresolved securities fraud charges stemming from a 2015 indictment. His personal life includes allegations of an extramarital affair.

Among general election voters, all of those liabilities become ammunition for Democratic attack ads. Democrats openly admit they would prefer to run against Paxton in November.

The Trump Factor

The wildcard that looms over everything is Trump's endorsement. He declined to endorse in the primary — an unusual move for a president who typically intervenes aggressively in Republican contests. On March 4, the day after the primary, Trump said he would endorse a candidate "soon" and would ask the other to drop out.

As of late March, that endorsement has not materialized. Every day it doesn't is a day the runoff stays competitive, both candidates spend money attacking each other, and the eventual nominee enters the general election weaker.

Paxton has said he would consider dropping out if Congress passes the Save America Act, which requires proof of citizenship for voter registration — effectively setting a legislative precondition for ending his campaign. Cornyn, meanwhile, has been lobbying establishment organizations (Chamber of Commerce, Farm Bureau, Border Patrol union) to boost turnout in the lower-participation runoff.

The Talarico Advantage

While Republicans fight, Talarico is spending. He outraised every candidate in the race — including Cornyn — during the primary cycle, pulling in $20.7 million. He raised $2.5 million in the days after the cancelled Colbert appearance alone. And he's already pivoting to general election messaging while his opponents are still relitigating an intraparty civil war.

A Public Policy Polling survey from March 4-5 showed Talarico leading both Cornyn and Paxton in head-to-head general election matchups. PPP is a Democratic-affiliated firm, so the numbers should be taken with a grain of salt. But the directional signal is clear: Texas is competitive in a way it hasn't been in decades.

Trump's approval in the poll was essentially underwater at 49-48% — in a state he won by 13 points. If that holds, it's a fundamentally different political environment than the one Cornyn has thrived in for the past 24 years.

What to Watch

Three things will determine whether Texas becomes a genuine Senate battleground or reverts to form.

First, the Trump endorsement. If Trump backs Cornyn quickly and Paxton drops out, Republicans unify early and the general election becomes a conventional red-state defense. If Trump delays, backs Paxton, or stays out entirely, the division metastasizes.

Second, runoff turnout. Runoff elections in Texas historically draw far fewer voters than primaries. Low turnout tends to favor the more motivated base — which could help Paxton, whose supporters are more intense. But it could also mean the eventual nominee wins with a narrow, unrepresentative slice of the party.

Third, Talarico's crossover strategy. His theory — that a progressive who talks about Jesus, teaches middle school, and frames everything in terms of economic populism can peel off enough Republican-leaning voters in a state that's 40% Hispanic — is either brilliant or delusional. November will tell us which.

What's already clear: whatever happens in the runoff, the Republican nominee will enter the general election having spent months and millions of dollars fighting a member of their own party. In a state where Democrats are already within striking distance, that's a head start money can't buy.