Not supporting their position, but at this point, what choice do they have? Resurrect Bernie? Bring in the two time loser, Hillary? Gov Cuomo who no one likes, especially in NY? Abrams from Georgia? Michelle O? Oprah? The Dems are toast and are only looking to do as much damage as they can to Trump now in order to possibly squeak out a win or at best, decrease the magnitude of loss.
The entire reason they got everyone else to drop out and circled the wagons around Joe was to keep Bernie out.
They screwed themselves.