Many of Romney’s problems arise from his lack of authenticity. This suggests that he should choose a running mate who conveys a feeling of he-just-can’t-help-himself genuineness. Which is why all the talk about Romney’s unwillingness to consider New Jersey Gov. Chris Christie for the vice-presidential slot is a bit of a mystery to me.

There are, to be fair, many reasons Romney might want to keep Christie off the ticket. Christie has an excessively large mouth. He is easily provoked. He turns up late to speeches on occasion. He doesn’t quit when he’s ahead. He is no one’s idea of a deputy. He comes from a state the Republicans can’t win, no matter what Romney does. He is a Northeastern laissez-faire Republican mistrusted by social conservatives. And, of course, he is unwieldy and overweight and makes Romney look anorexic by comparison. …

Why do people come by the hundreds to weekday morning meetings in small towns? Because Christie gives them something they want. Not so much the sarcasm, but the skillful, tenacious and blunt articulation of just where government has gone off the rails. No one in national politics does a better job of arguing against deficit spending than Christie.