Jon Bonck (R) defeated Shelly deZevallos (R) in the Republican primary runoff for Texas' 38th Congressional District on May 26, 2026.

Bonck and deZevallos were the top two finishers in the March 3 primary with 47.7% and 18.6% of the vote, respectively. They advanced to a runoff because neither received more than 50% of the vote. Bonck will face Melissa McDonough (D) and two other candidates in the November 3, 2026, general election.

Incumbent Wesley Hunt (R) ran for U.S. Senate rather than seeking re-election, leaving the seat open.

Bonck was, as of the 2026 election, a manager at a mortgage brokerage firm. President Donald Trump (R) endorsed Bonck on February 16, 2026. Bonck described himself as "a Christian, husband, father, and mortgage leader from Greater Houston — not a political celebrity, but a servant leader ready to fight for Texas families." In a statement following the primary, Bonck said, "[O]ur campaign has the momentum, the grassroots energy, and the broad support needed to win. We are proud to finish in first place, and we are just getting started."

DeZevallos was, as of the 2026 election, the president of the West Houston Airport. DeZevallos said she was running "because President Trump needs trusted conservative leaders in Congress who will end Democrat obstruction and keep the results coming for the American people." In a statement after the primary, deZevallos said, "I was born here, raised my family here, and have devoted 20+ years at the grassroots level to advancing our Republican agenda, protecting America First values, and making Harris County a safer place for our families."

As of May 2026, The Cook Political Report with Amy Walter, Inside Elections with Nathan L. Gonzales, and Larry J. Sabato's Crystal Ball each rated the general election Solid/Safe Republican.

This is one of 57 open races for the U.S. House of Representatives this year in which an incumbent is not running for re-election. Across the country, 21 Democrats and 36 Republicans are not running for re-election. In 2024, 45 incumbents — 24 Democrats and 21 Republicans — did not seek re-election.