They should learn how to win, for one.

You know what they need more of? Bernie's populist rhetoric. A promise that something will actually be different. Obama won on that promise, and then did nothing with it.

15 million people don't go missing unless your party is dead.

And bare in mind, I'm not saying anyone should have voted 3rd party; we can't do that without at least RCV. But something needs to reanimate the Democrats' corpse or we will all die at the hands of the next Mussolini.