The new map, as you will see, does not show a close and competitive general election. The Republicans now find themselves in a deep hole. Yes, more than seven long months remain until the election, and all kinds of unexpected twists and turns can occur. Sure, we don’t know the shape of the economy or terrorism, or the precise job approval rating of President Obama in the autumn, or the gaffes and scandals that may yet unfold on our way to the ballot box. But goshdarnit, there’s finally a pause in the non-stop primary calendar, and we’re going to take...