NYT‘s “The Caucus” blog:

Sasha Issenberg, a former Boston Globe reporter who has also written for Monocle, Slate, Philadelphia and The New York Times Magazine, has been writing a book about the new science of campaigns called “The Victory Lab.” It’s scheduled for publication next year.

But given the interest in Rick Perry, the Texas governor and new Republican presidential candidate, the portion of “The Victory Lab” about Mr. Perry will be published on Tuesday as an electronic book, “Rick Perry and His Eggheads: Inside the Brainiest Political Operation in America.” Mr. Issenberg is also the author of “The Sushi Economy.” An e-mail exchange between Mr. Issenberg and me — slightly condensed — follows: