Earlier this year, former Georgia Lieutenant Governor Geoff Duncan announced in an op-ed published by the Atlanta Journal Constitution that he would vote for President Joe Biden in November. Although Biden dropped his reelection bid last month and endorsed Vice President Kamala Harris to be his replacement, Duncan still plans to back the party in an effort to keep Donald Trump out of the White House. Taking the Democratic National Convention stage on Wednesday night, Duncan said, “I am a Republican. But tonight, I stand here as an American. An American that cares more about the future of this …