What Bernie needs to learn from Biden. Sanders can't lead the Democrats if his campaign treats them like the enemy

Dave Weigel, WashPo political reporter: “Turnout is way up, but the most reliable new voters are Biden-curious suburbanites.” Election analyst Dave Wasserman: Sanders’ new voters  didn’t emerge; as a result, he lost ground from 2016, still running as an insurgent. Sanders won as a Democrat, not a revolutionary needing a strategy uniting the existing Democratic Party around him. But it’s hard to move from treating the Democratic Party establishment with contempt to treating it like a constituency. David Sirota: “Biden is a full-employment program for the Beltway Democratic establishment. He makes sure that for them, nothing would fundamentally change. That's a huge part of why they support him.”

Biden got endorsements from Pete Buttigieg, Sen. Amy Klobuchar, Beto O’Rourke, and Harry , that helped him notch a strong Super Tuesday performance.