Your basic problem is viewing this as a left/right divide, when it's really a reasonable journalism/explicitly partisan reporting divide. Conservatives have been trained by decades of talk radio to think this way, and now all they have left on their side is a bunch of charlatans. CNN or MSNBC aren't paragons of virtue, but at least they are not completely disingenuous hucksters like the ones Fox trots out all the time. Hell, MSNBC even features their own right-wing charlatan in Hugh Hewitt.