Businessman Andrew Yang, who unsuccessfully ran for president in 2020 and mayor of New York City, said he has left the Democratic Party. “Throughout my twenties, I remained a staunch Democrat, though like many others I was drawn primarily to national races,” Yang wrote on his website. “I co-hosted a small fundraiser for John Kerry’s campaign at a bar when I was 29—I think we raised maybe $3,000. I thrilled to Barack Obama’s victory in 2008 and, to a lesser extent, his re-election in 2012.” Years later, Yang said he “donated to Bernie Sanders’ campaign” and then voted for former 2016 candidate Hillary Clinton over then-candidate Donald Trump. Last year, after losing the Democratic nomination, Yang—who had championed universal basic income—recalled campaigning in favor of then-candidate Joe Biden and later, for Democrat candidates Jon Ossof and Raphael Warnock, both of whom were vying to win Georgia’s two Senate runoff races …