Here’s the reasoning. Paul is a radical, a candidate of ideas. That makes him unlike any of the other candidates, and therefore not interchangeable with them. That’s different with, say, Pawlenty. When Pawlenty pulled out, his people redistributed to Romney, Perry, etc. Pawlenty’s people will support another Republican who they think can win. So as Pawlenty drops out, and Cain, and Santorum, and Gingrich, etc., do also, their people add to the front-runners. But none of them will go to Paul, because he’s not like them. Their support is wide and shallow; his is narrow and deep. And that means he cannot be nominated.