Perhaps Bannon has a skin condition but I won't speculate on that. I could speculate however on the dearly departed middle. So why is it gone when stat affirming numbers indicate otherwise. There are trajectories all over the place here but it generally only happens when a society starts losing cohesion from a multitude of reasons. Promises, even broken ones can be healthy as initial change agents. You could look at it all tactically through a systems dogmatic road to power or you could simple ignore the rules and shoot from hip and be transparent in your values. Like Trump had the courage to do and Saunders almost had the courage to do. The worst that could happen is that political platforms start changing to better reflect a sliding scale of importances of issues. Get there on a winding dirt road and pave your way back right down the middle.  
This is not a simplistic commentary. As Martin illustrates, we no longer vote for the party but rather the candidate. The way it should be.