A party without much urban infrastructure starts thinking about the future, from council races on up.
Metropolitan political divides have replaced the old red-state/blue-state cleavage.
There's a decisive break between Democratic and Republican support at a population density of 800 persons/per square mile.
Research finds that Republicans are more likely to crank up the AC in the summer.
Just take a look at these maps.
And some other House races to keep your eye on.
The percentage of Americans who say they lean Republican has increased in 47 of the 50 states