Tad Devine was in a car driving from Rhode Island to Washington when he told 125 reporters that Hillary Clinton was going to lose the general election. It was 2016, Bernie Sanders had just won New Hampshire in a landslide, and Devine—Sanders’s chief strategist, a 30-year Democratic operative who had worked for Al Gore and John Kerry—was making the case that the party was about to nominate the wrong person.
Look at Clinton’s weakness in open primaries, where independents could cross over and vote, Devine said. Those same voters would hand the election to Donald Trump in November.