I would say it's basically conventional wisdom among the DC set that Fox News is just a propaganda outlet now. But the thing is that it always was. It was less obvious before Obama because insanely critical coverage of Clinton (barely anyone watched then) and obsequious coverage of Bush was pretty much the norm. Fox took it up to 11, but it was already at 10 elsewhere. Coverage of Obama elsewhere in the media was more...normal. It was good and bad in complicated ways but not insanely one sided. But the sharp contrast with how Fox covered things made the differences impossible to ignore. Fox didn't change, though, everybody else did.