It's hard to envision that there's any room in the spectrum to the left of Bernie Sanders. He's just shy of being the Vlad Lenin of this era.
And that's why I think he poses a greater danger than fellow socialist Hitlery (unelectable because the next scandal will do her in) KKKlintoon. The commie revolution of 1917 happened quickly and caught more than a few by surprise since the Lenin Klan was largely dismissed as a bunch of fringe kooks. Sander is a kook and his followers are out on the furthest fringe but they can be energized to seize power, following the lead hussien established with the massive fraud in the 2008 and 2012 "elections".