I hope he runs again - or at least someone like him…
Unlikely–there’s nobody like him in the Democratic Party anymore (there used to be plenty–in the 1940’s), and third-party runs are for people with far larger egos than him. And he’s done, which is a shame. My guess is the Dems will stop going further and further right, which is something, and run more of a centrist candidate next time. I’m thinking Kamala Harris in 2020. A liberal, I’m afraid, would be too much to ask.