Tim Noah,
writing in Slate, talks about recent demographic research revealing that more of us now live in "landslide counties" -- counties where 60% or more voted for one or the other presidential nominee. Somewhat hyperbolically, Noah says, "[t]he likelihood that you will ever argue politics with your neighbor is diminishing rapidly, because it's less and less likely that, politically, you and your neighbor will ever disagree."
I can't believe that people are relocating in large numbers to counties of like-minded souls. I have to think that this change reflects that the political parties have realigned on cultural splits. Anyway, it's interesting.