Perhaps the simplest way to diagnose the problem with American politics right now is that it is out of touch. Democrats and Republicans have spent the better part of the last decade arguing about partisan peccadillos and culture war obsessions, while middle-class concerns have languished. And thus a new movement has risen mostly but not exclusively on the technocratic center-left, intent on refocusing liberal politics in general and Democratic politicians in particular on workaday economic concerns.
This movement has many strains and individual obsessions, but it is united by a shared thesis: The basics of middle-class life—especially but not only housing, education, and health care—have become too expensive, and politicians should seek to remedy this via policy interventions.