"Bernie is the guy with whom Democratic voters are most comfortable deep in their hearts. He says all the things the others believe and that Democratic voters feel, but he says it all without dilution and without intellectual compromise."
That is precisely what clinched the Republican nomination for Trump. He said out loud, what almost every Republican voter was thinking. He saw a huge underserved market and simply stepped up with the exact message that would resonate with them.
Bernie is obviously doing something similar, and it's paying dividends.