:::No, you misunderstand my premise.  It's not a question of whether neoconservatism is a notable or defined concept.  It's a question of what such political labels mean generally.  Finding sources that call someone a neoconservative does not establish that someone "is" one, any more than a source calling Obama a "moderate" or "liberal" establishes that he is such a thing.  But he either is or isn't the President.