Former Georgia Republican Lt. Gov. Geoffrey Duncan endorsed Joe Biden in an op-ed yesterday. An excerpt follows: It’s disappointing to watch an increasing number of Republicans fall in line behind former president Donald Trump. This includes some of his fiercest detractors, such as U.S. Senate Minority Leader Mitch McConnell, New Hampshire Gov. Chris Sununu and former U.S. Attorney General Bill Barr, who raised eyebrows during a recent interview by vowing to support the “Republican ticket.” This mentality is dead wrong. Yes, elections are a binary choice. Yes, serious questions linger about President Biden’s ability to serve until the age of 86. His progressive policies aren’t to conservatives’ liking. But the GOP will never rebuild until we move on from the Trump era, leaving conservative (but not angry) Republicans like me no choice but to pull the lever for Biden. At the same time, we should work to elect GOP congressional majorities to block his second-term legislative agenda and provide a check and balance.ExploreGeorgia Voter Guide: May 2024 The alternative is another term of Trump, a man who has disqualified himself through his conduct and his character. The headlines are ablaze with his hush-money trial over allegations of improper record-keeping for payments to conceal an affair with an adult-film star. Most important, Trump fanned the flames of unfounded conspiracy theories that led to the horrific events of Jan. 6, 2021. He refuses to admit he lost the last election and has hinted he might do so again after the next one. Those holding their nose and falling behind…