Former Georgia Lt. Gov. Geoff Duncan penned a message to his fellow Republicans: Stop normalizing Donald Trump by getting in line behind him. The official said in an op-ed he plans to vote for Joe Biden in November, arguing, “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 …