From John Scalzi's analysis of the situation...I think he hits the nail on the head:
Wow. I had No idea John Scalzi was a political commentator too. I went to high school with John Scalzi and Josh Marshall, who were close friends in a class of about 60 graduates at my school. They were seniors ('87) when I was a sophomore ('89).
Funny thing is, most of the people coming out of the school, and all of the administration, are die-hard Republicans, it being kind of an exclusive and expensive school.
I contribute the success of Scalzi and Marshall to Dave Fawcett and Larry McMillan. Too bad I never paid attention in Fawcett's class and I never had McMillan.