Donald Trump just dropped a political atomic bomb on the Texas primary. After months of wavering, backroom lobbying, and public hesitation, Trump officially endorsed Texas Attorney General Ken Paxton in the brutal Republican runoff for the U.S. Senate. The decision is a massive blow to four-term incumbent Senator John Cornyn, who has held that seat since 2002.
The move instantly reshapes the most expensive Senate primary in American history. It exposes a deep, unforgiving rift within the Republican party. Trump didn't hold back on Truth Social, explicitly punishing Cornyn for a lack of personal loyalty.
"John Cornyn is a good man, and I worked well with him, but he was not supportive of me when times were tough," Trump wrote. He blasted Cornyn for being "very late in backing me" during the 2024 primary.
By contrast, Trump crowned Paxton a "true MAGA Warrior" who has consistently fought for the America First agenda. This endorsement didn't happen in a vacuum. It comes with just one week left before the May 26 runoff election, and early voting is already underway. This is Trump demanding total loyalty, and it could cost Republicans a seat they desperately need to hold.
The Long Memory of Donald Trump
If you want to understand why Trump chose Paxton over Cornyn, you have to look at the history. Trump values loyalty over policy victories, institutional standing, or general election viability. Paxton has been a fierce defender of Trump for years. He even spearheaded the failed, last-ditch lawsuit to overturn the 2020 presidential election results. When Trump was under fire, Paxton was on the front lines.
Cornyn took a different path. The veteran lawmaker questioned Trump's ability to win a general election back in 2024. While Cornyn eventually fell in line and endorsed Trump, the delay sealed his fate. In Trump's world, a late endorsement is almost as bad as an opposition vote. Cornyn even introduced legislation to rename a 1,800-mile highway the "Trump Interstate" to mend fences. It wasn't enough.
The timing of this endorsement reveals how conflicted the Trump camp really was. In early March, right after Cornyn narrowly led Paxton 42% to 41% in the primary, Trump promised a quick endorsement. He even claimed he would force the loser to drop out immediately.
Instead, Trump went silent for more than two months. National Republicans, including Senate Majority Leader John Thune and Senator Lindsey Graham, begged Trump to stay out or back Cornyn. They argued that Paxton's massive legal baggage makes him a liabilities nightmare in November. Trump hesitated, weighed his options, and even listened to Cornyn’s consultants.
The turning point happened behind closed doors. Paxton heavily lobbied Trump, meeting him face-to-face at Mar-a-Lago on March 20. He pitched himself as a fighter who could turn out low-propensity MAGA voters who usually skip non-presidential elections. Paxton also messaged Trump directly, promising to champion the elimination of the Senate filibuster to pass the SAVE America voting act. That policy pitch, combined with the underlying grudge against Cornyn, swung the pendulum.
A Massive Gamble on a Scandal-Plagued Candidate
By backing Paxton, Trump is leaning entirely into a high-risk, high-reward strategy. To say Ken Paxton carries political baggage is an understatement. He has survived political scandals that would have ended almost any other career.
Paxton was impeached by the Republican-led Texas House on corruption and bribery charges, though he was ultimately acquitted by the state Senate. He faced a felony securities fraud indictment for years before reaching a last-minute deal to dismiss the charges. During this primary, his personal life became a weapon, with opponents highlighting that his wife filed for divorce on biblical grounds.
Cornyn’s campaign has consistently warned that nominating Paxton is handing a gift to Democrats. Following the endorsement, Cornyn urged Texas voters to look at the bigger picture.
"It is now time for Texas Republican voters to decide if they want a strong nominee to help our GOP candidates down ballot and defeat Talarico in November, or a weak nominee who jeopardizes everything we care about," Cornyn stated.
National Republicans are privately panicking. Senator Susan Collins openly called Paxton an "ethically challenged individual." Lindsey Graham admitted that while Paxton can still win, Trump’s endorsement makes the general election "three times more expensive" for the party. Republicans have already poured over $100 million into this primary alone. Now they face a grueling, cash-burning general election fight.
The Democratic Threat in a Changing Texas
The real beneficiary of this intra-party warfare might be State Representative James Talarico, the Democratic nominee for the Senate seat. Talarico won his primary outright and has built a formidable campaign based on a mix of faith-based populism and generational change.
Texas is no longer a guaranteed slam dunk for Republicans. While it remains a red state, margins have shrunk significantly over the last decade. Talarico’s team intentionally avoided getting dragged into the Republican mudslinging, framing the election as a fight against a corrupt status quo.
"It doesn't matter who wins this runoff," Talarico said following Trump's announcement. "We already know who we're running against: the billionaire mega-donors and their corrupt political system."
Public polling shows a remarkably tight race. Some internal metrics put Talarico in a dead heat with both Cornyn and Paxton. Runoff elections typically suffer from incredibly low voter turnout, drawing out only the most dedicated party activists. Runoff voters are fiercely conservative, which gives Paxton a distinct edge now that he has Trump’s official blessing. The true test comes in November, when independent and suburban voters weigh in on Paxton’s controversial record.
If you are a registered Texas Republican who hasn't voted yet, you have until the end of the week to cast an early ballot before the official May 26 runoff election day. Keep a close eye on voter turnout numbers in major suburban counties like Tarrant, Collin, and Denton over the next few days. Those areas will reveal whether Trump's endorsement is galvanizing the base or alienating moderate conservatives who are tired of the chaos.
