Gov. Brian Kemp set the election date on Tuesday, a day after Greene resigned from Congress following a tumultuous five years.
The field to succeed Greene in Georgia's 14th Congressional District is already swelling. As many as 19 Republicans have said they will run or are considering it, including state Sen. Colton Moore of Trenton, District Attorney Clayton Fuller and Paulding County businessman Brian Stover.
The district stretches from Atlanta's northwest suburbs through all or part of 10 counties to the Tennessee state line. It's rated as the most Republican-leaning district in Georgia by the Cook Political Report.
Greene was once a major backer of President Trump. But in recent months, she has been sharply critical of his foreign policy and joined Democrats who pushed for the release of more Jeffrey Epstein documents.
Returning another Republican to Congress would bolster a narrow GOP minority that was further depleted by the death Monday night of Republican Doug LaMalfa, a seven-term U.S. representative from California who suffered a medical emergency. His death and Greene's resignation narrowed the party’s control of the House to 218 seats to Democrats’ 213.