Jon Bonck (R) and Shelly deZevallos (R) were the top two finishers among the 10 candidates running in the Republican primary for Texas' 38th Congressional District on March 3, 2026. Bonck and deZevallos advanced to a May 26 runoff because neither received more than 50% of the vote. As of March 2026, Bonck, deZevallos, Barrett McNabb (R), and Michael Pratt (R) led in fundraising and local media attention.

Incumbent Wesley Hunt (R) ran for U.S. Senate rather than seeking re-election, leaving the seat open. Hunt won re-election in 2024 63%–37%.

Bonck was, as of the 2026 primary, a manager at a mortgage brokerage firm. 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." Bonck's campaign website said his real estate experience "has shown him firsthand how outdated policies and red tape can frustrate families...Jon will work to reform these outdated policies and eliminate red tape to help Americans thrive and achieve the American dream." President Donald Trump (R) endorsed Bonck on February 16, 2026.

DeZevallos was, as of the 2026 election, the president of the West Houston Airport. DeZevallos' campaign website described her as "a business leader, pilot, and lifelong Houstonian who has dedicated her life to service, innovation, and advancing our shared America First values." 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."