They got greedy with AOC's election, which had a lot of factors. The one election they could have won if Bernie and friends had actually tried was Henry Cuellar's primary, but they didn't bother.
They think that Twitter activism speaks for the public and that all you have to do is shout about corruption and other glib catchphrases and...the revolution arrives by magic, I guess.
More and more are saying this is why we shouldn't focus on politics, to which I say fine, good, just go back to other attention-seeking venues that have no real affect on anyone, aside from the pockets of the grifters you line. Kystal Ball, Glenn Greenwald, Kyle Kulinski, Chapo and friends will be right behind you.