No, Fox is not -- as CNN's Rick Santorum argued -- simply the conservative analog to left-leaning MSNBC. How many times has that network's Rachel Maddow campaigned with a president, as Sean Hannity did in November? The answer is: She hasn't. You see, MSNBC, for all its liberal tilt, is a news organization. Fox is a propaganda machine that pretends to be a news organization when that suits its purposes.