Ruy Teixeira, a senior fellow at the Center for American Progress, is the author of The Optimistic Leftist: Why the 21st Century Will Be Better Than You Think (St. Martin’s, 2017); Red, Blue, and Purple America: The Future of Election Demographics (Brookings, 2008); The Emerging Democratic Majority with John Judis (Scribner, 2002); America’s Forgotten Majority: Why the White Working Class Still Matters (Basic, 2000); The Disappearing American Voter (Brookings, 1992).