“Until Tuesday, Donald Trump spent much of the campaign running as an insurgent,” Politico reports. “But in one night, Kamala Harris changed all that. After weeks of intense scrutiny on her own policy pivots over the years, the vice president deftly shifted the focus of the campaign to a referendum on Trump’s presidency.” “As the candidates left the debate stage, the momentum Harris had generated after first replacing Joe Biden as the Democratic nominee seemed to be cresting again.