I recently moved from Manhattan to the suburbs, and since my driving skills had deteriorated somewhat, a friend was instructing me. She explained that when you drive on narrow, lightly traveled suburban streets, you don’t need to worry about staying in the proper lane unless there’s a car approaching from the opposite direction. Instead, she said, “Go down the middle of the road until you’re forced to the right.” And I thought: Ah, the Mitt Romney strategy . . .