Democrats are desperate to retake part of Congress. Their best shot is the House. This fall, they’ll be slugging it out with Republicans—but in the meantime, they’re slugging it out with each other. The progressive and moderate wings of the Democratic party are going head-to-head in Democratic primaries all over the country right now, wrestling over what the party should be and stand for. This week, we have the story of a candidate in one primary like that.