Geoff Duncan, a Trump critic and former Republican, announces Georgia governor bid as a Democrat

Former Georgia Lt. Gov. Geoff Duncan at a press conference at the Georgia State Capitol in June 2024. (Matthew Pearson/WABE)

This story was updated on Sept. 16 at 12:18 p.m.

Former Republican and onetime Georgia Lt. Gov. Geoff Duncan is running as a Democrat for governor, a remarkable step for a staunch critic of President Donald Trump who left the conservative fold in a region where party switchers have gone the other direction for generations.

“I’ve never wavered in taking on Trump. So Georgia Republicans threw me out of their party,” Duncan said in his announcement video released Tuesday. “I was leaving anyway. Now I’m running for governor as a proud Democrat.”