(imho) If the trend goes nationwide and 15% down at convention time and the trend looks to go lower, Katie bar the door .... a convention free for all and zer0 thrown out on on street? Don’t know. Things could go this way is my guess. The demonRATs are growing tired of being thrown under the bus, perhaps?
If 0bama is “primaried”, this will likely break the 90+% hold on the “black vote” that the ‘rats have depended on.
Getting that block to vote nearer the levels of the general voting population, along with voter ID, will put the ‘rats out of power for the foreseeable future.