Just bumping this up so I don't lose it when I want to update. Couple of points...
House should really be bumped up to a 30-35 seat call now.
In the Senate, I'm really only sensing cosmetic changes right now. Nothing big.
Governor's races are still wide-open in some sense, but in general I'm seeing a potential Dem massacre really setting up here, perhaps moreso than in other places. Go figure.
Hate beating a dead horse, but does your already extensive analysis extend to state legislatures, or would that be spreading yourself too thin?