He was a D last time. Now it's an F- with how he's doing his earnest to screw Puerto Rico, and now there's the latest ACA debacle that he created. I can't deal with it anymore.
Look at it this way -Trump has just made Medicare-for-All an inevitability the next time Democrats regain control of the tripartite (White House and Congress).
I hate to be a fatalist, but considering the inherent disadvantage Democrats face with geographic distribution of votes in Congress/the Electoral College, let alone the apparent trend of Democrats losing the white working class vote, I don't think we can guarantee that this will happen any time soon.