Full Breakdown
Texas Senate Runoff: Cornyn vs. Paxton and the Fight for Senate Control
5/26/2026, 10:16:11 PM
Cornyn vs. Paxton: The Core Contest
Incumbent Sen. John Cornyn (R-TX) and Attorney General Ken Paxton (R-TX) face off in a May 26 Republican runoff for the U.S. Senate nomination. Neither secured a majority in the March 3 primary—Cornyn 42 % to Paxton 40 %—triggering the two-candidate contest. The winner will meet Democratic state Rep. James Talarico in November.
Background: Trump’s Late Endorsement and Primary Dynamics
President Donald Trump endorsed Paxton a week before the runoff, calling him a “true MAGA Warrior.” The endorsement arrived after months of Trump’s selective backing of challengers who ousted incumbents in Louisiana, Kentucky and Indiana. Senate Republicans warned that a Paxton nomination could force the GOP to divert “hundreds of millions of dollars” to defend the seat, while Cornyn’s camp argued his record makes him the safer general-election candidate.
Key Players and Their Stakes
- John Cornyn – Four-term senator, backed by Senate Majority Leader John Thune and the National Republican Senatorial Committee.
- Ken Paxton – Two-term attorney general, impeached by the Texas House in 2023, acquitted by the state Senate, and facing a high-profile divorce.
- Donald Trump – Former president, whose endorsement has reshaped multiple GOP primaries.
- James Talarico – Democratic nominee, a fundraiser who has raised $27 million in the first quarter of 2026.
Spending and Polling: Numbers in the Race
Campaign finance filings show divergent totals: the Cornyn-aligned network reports roughly $90 million in advertising, while Paxton-aligned groups claim $5–$6 million. Independent trackers estimate total primary spending exceeds $120 million, with $100 million+ in the March primary and $25 million in the runoff. Polls vary; some show Paxton leading by double digits, others place the race in a dead-heat with 8 % of voters undecided.
Why the Runoff Matters for Senate Control
The U.S. Senate currently stands at 53-47 in favor of Republicans. A Paxton victory could make the Texas seat “more vulnerable to a Democratic upset,” according to Senate leaders, potentially forcing the GOP to allocate additional resources in November. Conversely, Cornyn’s supporters argue his incumbency and fundraising advantage would help preserve the majority.
Official Statements & Responses
- Cornyn told voters, “Texans must decide if they want a strong nominee to help our GOP candidates down-ballot and defeat Talarico, or a weak nominee who jeopardizes everything we care about.”
- Paxton posted on X, “We have already changed our TV ad traffic … to ensure our campaign ends on a positive note so we can focus on beating the leftist lunatic in the fall.”
- Trump wrote, “Ken is a true MAGA Warrior who has ALWAYS delivered for Texas,” and added, “John Cornyn is a good man, but he was not supportive of me when times were tough.”
- Senate Majority Leader John Thune said the party “needs a nominee who can win in November without draining resources from other battlegrounds.”
Criticism & Opposition
Republican senators Lindsey Graham and Mike Rounds expressed “disappointment” that Trump bypassed Cornyn, warning that Paxton’s legal scandals—including a 2023 impeachment and a pending securities-fraud indictment—could be exploited by Democrats. Cornyn’s ads highlighted Paxton’s $12 million net worth, multiple homes, and divorce, calling him “morally bankrupt.”
Conflicting Reports & Gaps
Spending figures differ across sources ($90 million vs. $120 million vs. $135 million). Polling also lacks consensus, with some surveys favoring Paxton and others showing a tie. Neither campaign has released final fundraising totals for the runoff period.
Verbatim Quotes
- “Ken is a true MAGA Warrior who has ALWAYS delivered for Texas,” — Donald Trump, social-media post
- “John Cornyn is a good man, and I worked well with him, but he was not supportive of me when times were tough.” — Donald Trump, social-media post
- “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,” — John Cornyn, campaign statement
- “John Cornyn fought Trump on the border. And you can go back over about a decade and see that he was not for the border wall,” — Ken Paxton, interview on Fox News
- “He’s a favorite of conservatives, but his career is plagued with ethical, moral, and personal questions ... making him a greater risk in the general election,” — Eshbaugh-Soha, political-science professor
What’s Next
The runoff winner will appear on the November ballot against Talarico. Parallel runoffs for Texas attorney general, railroad commissioner and several U.S. House seats could further shape the state’s political map and influence national Senate dynamics.
