Geoff Duncan, who served as Georgia’s lieutenant governor from 2019 to 2023, on Monday lamented his fellow Republican leaders who are “[falling] in line behind” Donald Trump, explaining in an op-ed for the Atlantic Journal-Constitution why he’s voting for Joe Biden in November. Duncan noted many Republicans have expressed support for a Trump ticket in 2024, despite the former president’s unprecedented efforts to overturn the 2020 presidential election and his subsequent inciting of a violent mob who ransacked the U.S. Capitol Building on January 6, 2020. Among those Duncan called out are U.S. …