Democrat Stacey Abrams' campaign tells The Associated Press that Sunday's debate is off because Republican candidate Brian Kemp is attending a rally around the same time with President Donald Trump.
A spokesman for Kemp confirms he cannot be at Atlanta's WSB-TV station for the 5 p.m. debate, but says Kemp is willing to find another time slot.
Trump's rally is scheduled for 4 p.m. about 100 miles south of Atlanta.
Officials at debate host WSB-TV did not immediately respond to a request for comment.
The Abrams' campaign says her schedule is booked until Tuesday's election, but that she'll replace the debate with some kind of public Q&A with voters. She and Kemp held one previous debate during the campaign.