Republican Clay Fuller is projected to have won Georgia's runoff election to replace former Congresswoman Marjorie Taylor Greene, a once-staunch ally of Donald Trump who resigned earlier this year after breaking with the president.

Fuller won the election to replace her on Tuesday, according to CBS News, the BBC's US partner. He is a Trump-endorsed candidate who triumphed against Democrat Shawn Harris, keeping the strongly conservative district in Republican hands.

The win bolsters the party's slim 217-214 majority in the House of Representatives. Fuller, a lieutenant colonel in the Georgia Air National Guard, will serve out the rest of Greene's term until next January.

In an interview with Fox News, Fuller emphasized that Trump’s endorsement was the key factor in his victory, describing it as the honour of my lifetime.

Fuller remarked, He was the difference-maker. He made all the difference in the world.

A special election was held on March 10, where Harris performed slightly better than Fuller due in part to a split Republican vote, necessitating the runoff. To retain the congressional seat beyond January, Fuller must begin campaigning for the midterm elections this November, likely facing Harris once more.

Harris expressed commitment to challenge Fuller again, stating, This wasn't the result we wanted, but the message is clear — people here are ready for leadership that puts them first. The fight continues. On to November!

Fuller, closely aligned with Trump's policies, particularly on immigration, gained momentum largely due to the presidential endorsement. Trump's strategy aimed to uphold a strong Republican presence in the district, reflecting the GOP's fragile hold in Congress.