Ronny Jackson, the former White House physician and retired Navy rear admiral, is heading to a runoff in the Republican primary in Texas’s 13th Congressional District.

Jackson will face off against agricultural expert Josh Winegarner. Winegarner earned the most votes in Tuesday’s Republican primary with nearly 39 percent, with Jackson coming in second with roughly 20 percent of the vote.

Since no candidate hit the 50 percent threshold, the top two vote-getters will compete in the runoff on May 26.

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President Trump Donald John TrumpBarr criticizes DOJ in speech declaring all agency power 'is invested in the attorney general' Military leaders asked about using heat ray on protesters outside White House: report Powell warns failure to reach COVID-19 deal could 'scar and damage' economy MORE threw his support behind Jackson last month, saying he is “strong on Crime and Borders, GREAT for our Military and Vets, and will protect your [Second Amendment].”

However, Jackson has had to grapple with lingering controversy from his time working in the White House. His nomination to lead the Department of Veterans Affairs was withdrawn from consideration amid allegations of professional misconduct, including drinking on the job and overprescribing medication.

Jackson is running for the chance to replace retiring Rep. Mac Thornberry William (Mac) McClellan ThornberryTrump payroll-tax deferral for federal workers sparks backlash Overnight Defense: Woodward book causes new firestorm | Book says Trump lashed out at generals, told Woodward about secret weapons system | US withdrawing thousands of troops from Iraq Top Armed Services Republican 'dismayed' at Trump comments on military leaders MORE (R), who was first elected to the House in 1994.

The Democratic Party will also see a runoff between retired business consultant Greg Sagan and office manager Gus Trujillo.

Republicans hold a huge advantage in Texas’s 13th Congressional District, which Thornberry won with over 81 percent of the vote in 2018.