The Democratic Party has long been a big tent. What’s new is the depth of discontentment in the base, and the way that frustration is finding expression in elections big and small https://www.economist.com/united-states/2026/09/10/how-far-left-will-democrats-go?taid=6aa4778c6c2d4d0001f17f9d&utm_campaign=trueanthem&utm_medium=social&utm_source=twitter