Trump dominates, but only with less than one third. Carson does well. The others are struggling to make much of a showing, but somebody needs to emerge as the political mainstream candidate, and I think that person will be Rubio, sooner or later. Jeb Bush should figure that out and do something to help now, when it would be most helpful. Jeb’s candidacy has failed. Not completely, not yet, but he hasn’t built his poll numbers, he’s lost ground, and his self-presentation has been weak. I like his mild manner, but it’s “low energy,” as Trump puts it, and, as I’d put it, just not competitive and forceful enough to gain ground in this field. Rubio, by contrast, has some combative heft.