'Lifelong Republican' endorses Kamala Harris

Former Georgia Lieutenant Governor explained in an op-ed published by the Atlanta Journal-Constitution earlier this year why he was supporting President Joe Biden in his bid for reelection.

Skewering his fellow Republicans for "[falling] in line behind Donald Trump," the ex-GOP leader wrote: "The healing of the Republican Party cannot begin with Trump as president," which is why, "This November, I am voting for a decent person I disagree with on policy over a criminal defendant without a moral compass."

Now that Biden has dropped his bid and nominated Kamala Harris for the presidency, Duncan announced his endorsement for the vice president Wednesday.

READ MORE: 'Actually lay out some proof': Ex-GA GOP Lt. Gov. skewers Ted Cruz over baseless election claims

"I’m committed to beating Donald Trump," Duncan wrote in a post via X. "The only vehicle left for me to do that with is the Democratic Party. If that requires me to vote for, speak for, or endorse @KamalaHarris then count me in!"

MSNBC's Katie Phang responded to the former Georgia leader's post, writing: "From the former Lt. Gov. of Georgia, Geoff Duncan, a lifelong Republican."

Eric Columbus, former counsel to Biden during his years as a senator, wrote: "Duncan was the Georgia Lt. Gov. from 2019-2023. He backed Trump in 2020, but was horrified by Trump's attempted coup. He endorsed Biden in May, and wrote: 'I am voting for a decent person I disagree with on policy over a criminal defendant without a moral compass.'"

READ MORE: Ex-GA lieutenant gov. rips GOP leaders for 'falling in line' behind Trump: Vote 'for a decent person'