What is the author's style in Game Change: Obama and the Clintons, McCain and Palin, and the Race of a Lifetime by John Heilemann?

Game Change by John Heilemann and Mark Halperin, is written in the third-person narrative. Both of the authors are reporters and political analysts. Therefore, the book is a combination of the reporting of actual facts and interviews as well as opinion based on the authors' experiences as professional analysts.