The clearest read of what happened last night is that, as far as I can tell, Democrats won every race that was in meaningful contention anywhere in the country. That’s not just high-profile races in New York, New Jersey and Virginia or the redistricting proposition in California. It goes way down into races only obsessives or local observers were watching in Pennsylvania, Georgia, Mississippi and a bunch of other places. Democrats won everywhere, and just about everywhere they won by larger margins than even optimists were expecting.

As I noted last night, some of these were surprises against low expectations which were not realistic. But Democrats did well against realistic expectations too.

Elections are hard to predict. But even with that, some of the notional “surprises” we’re seeing tonight are less surprises than a measure of GOP dominance over current press narratives. People were looking for an upset in New Jersey. Nate Silver’s Silver Bulletin speculated that New Jersey might be moving toward becoming the next swing state. In fact, Rep. Mikie Sherrill (D) currently appears on track to crush Republican Jack Ciattarelli. A similar failure of conventional wisdom appears to be unfolding in the Virginia Attorney General’s race. A lot of D.C. insiders had convinced themselves that a controversy over some intemperate texts (not nothing but fairly close to it) had doomed his campaign. As recently as a couple days ago, betting markets (which are proxies for conventional wisdom) gave his opponent Jason Miyares 3-to-1 odds of victory. Jones now appears on his way to a clear though not resounding victory with a 3-to-4 percentage point margin.