Ambinder wrote Wednesday (via Michael Calderone) that McChrystal is a liberal, and added in the detail about Fox News to flesh out the point:
Even more about McChrystal: now it can be told. The story about him voting for Obama is not contrived. He is a political liberal. He is a social liberal. He banned Fox News from the television sets in his headquarters. Yes, really. This puts to rest another false rumor: that McChrystal deliberately precipitated his firing because he wants to run for President.