I am sure we are 95% in agreement, and I wish I could comment better expressing that and not sound like I am picking nits.
I just see it as a lack of D coordination, clarity, purpose, strategic thinking, a controlling hand/playcaller, and killer-instinct. Pelosi is not that person, and it shouldn’t be ON her. I don’t see it as Sanders and Warren not playing well with others. The Republicans had it easy. No accountability, and no interest in governance. All they had was messaging. Hating-on-liberals, and a tear-it-all-down mentality. It worked with every campaign, in every race everywhere. Simple. Throw in a HRC, Soros, or Pelosi mention and Socialism. Yet still, they had coordination and discipline and absolutely no misconception about their goal and strategy. Destroy The Other using any means necessary, and damn any talk of policy or shades of grey.
I don’t understand how the Dems can miss the obvious. All Rs can be discredited with the same exact playbook now. Just pool your resources, and attack every single R using their obeisance to Chump. Focus on Senate races which are statewide, un-gerrymanderable, and hew closely to Presidential/downballot effects.