Mr. Doyle needs to check his politics at the door when he examines what is happening at Fox.

It is hard to argue that the loss of top hosts Bill O'Reilly and Meagan Kelly would not have any impact on Fox ratings.  I would submit that turnover, not politics or content, is the real reason why Fox's ratings are down.  The Fox audience didn't become less right wing all of a sudden. They just lost their favourite stars.