NBC wants an “open” socialist and a politburo, too, but it is way too soon for an open socialist to be running in an election. Bernie would set the cause back a few years by being the Candidate. The Left is pretty frantic right now because they thought in 2016 that they were over the top and would have it all in 2017 and could dispense with undirected elections and the Constitution. They saw it all slide away and are whirling about and crashing into walls as they scramble to pick up the pieces and force it through.
How funny would it be if a Russian-loving communist is the nominee after three years of the Russian hoax.