To defeat Donald Trump, Kamala Harris must do far better among young voters than President Biden did. Guess what: An important new\xa0poll of young voters\xa0finds that Harris\u2019 entry has dramatically shifted their preferences in her favor and against Trump. Which confirms a larger story: The Democratic-leaning constituencies who had drifted toward Trump\xa0now may be swinging\xa0to Harris, exposing a weakness in his previous support. We talked to John Della Volpe, an expert in the youth vote who conducted this poll, abut what\u2019s driving all these shifts\u2014and why they might enable Harris to triumph.\xa0\nLearn more about your ad choices. Visit megaphone.fm/adchoices