I am too tired to go in depth here, but suffice it to say it's a product of media-driven politics: not sophisticated, not interesting, and ruinous in several additional ways.
Meanwhile, Trone got smoked in MD. ~13 point polling error in Alsobrooks favor. I move the Hogan loss/margin from ~10 to ~15... but it is going to cost Ds dearly because Trone could have self-funded.
Just a warning to all of us: the polls are badly broken. Another potential usefully data source corrupted by corporate media in order to drive the frenzy, ratings, clicks, and etc.