I'm starting to believe Sanders will end up the nominee. He did pretty well in 2016 with what was assumed for much of the cycle to be an "inevitable" nominee in Hillary Clinton. This cycle has no such overwhelming favorite--Joe Biden looked like one early, but he certainly doesn't seem like one anymore. Sanders is the nominee who tends to engender the most passion which, for all the concern over his "electability," is probably the most important quality a Presidential candidate can have.
That said, Biden does have a chance at a comeback. Iowa and New Hampshire were expected to be worse states for him in the primary. Nevada and South Carolina were supposed to be strong ones (among the early states)--he pretty much needs to win them both now.
