Because Kamala Harris’s presidential campaign is under a month old, Democrats see next week’s nominating convention as a unique opening to do more than usual to define her in the minds of swing voters. But there’s another opportunity here as well: A successful convention will deeply rattle Trump, and when he fears he’s losing, he does himself tremendous additional harm. We talked to veteran journalist Ronald Brownstein, who has a new piece for The Atlantic on the task ahead for Harris in Chicago, about what she might be able to accomplish—and how it could frustrate future Trump attacks.  Learn more about your ad choices. Visit megaphone.fm/adchoices