So...single payer was right on the cusp of happening in 2010 but those mean ole' Democratic leaders shut the discussion down? Ferchrissakes...If that's what you think happened, you live in fantasy land. 

There hasn't been a chance in hell of single payer getting through congress in the whole of American history. So if you think it was right about to happen but Nancy Pelosi "shut it down" then you weren't even trying to pay attention.