Bernie Sanders' stature and strength continues to grow. He is the folk hero of the primary season. His message is repeated consistently to millions of people. He's neck and neck with Hillary in early primaries. The money is rolling in, and the volunteers have become a genuine mass movement. A sense of humor has emerged from under the early strains. Most important to many left-progressives is the rational discussion of democratic socialism for the first time in 90 years, since we last had an elected bloc of socialist mayors agitating for what became the New Deal.