So they just convincingly voted for Mark Sanford, a man who cheated on his wife, tried to cover his actions with an absurd story about hiking the Appalachian Trail, and trespassed on his ex-wife’s property, over an exemplary Democratic candidate. And you know what? Given their preferences, this was the right thing to do.

Look, we have an intensely polarized political system, and in Congress, at least, party affiliation is basically all that matters. When Massachusetts voters chose Scott Brown because he seemed like a nice guy, they were being idiots; his character (which I suspect they misjudged, but never mind) didn’t matter, while the loss of that 60th seat in the Senate almost killed health reform.

Maybe, just maybe, you can make a case for choosing the right person for governor, regardless of party. But when you’re sending someone to Congress, all that matters is the R or D after that person’s name. It seems that conservative voters understand that; liberals and moderates should, too.