It was Rand Paul who asked the most important question at this week's Republican presidential debate.
What is a fiscal conservative?
Naturally, since Paul was the one asking, it was largely ignored by the drones of conventional wisdom and by the other candidates.
But the campaign is about to move into that odd phase where Americans actually, formally, begin to express their preferences in states like New Hampshire and Iowa.
And the heads of Republican voters have been stuffed to bursting with crazed Imperial Donald Trumpisms and Dr. Ben Carson's biographical epiphanies, which give me a warm cuddly feeling but have little to do with the balance of power or governing...