They are shooting from the hips to see what sticks or rather what narrative comes up that the MSM can control. Once they have a viable narrative they will come up with a candidate the is not burned. Keep an eye on the ones that are trying to not draw attention to themselves. AOC is the path finder and the fact that she is about to crash and burn (as I predicted some time ago) means they have the real candidate(s) ready to pop up to save the day.