This is exactly right (on Nate Silver’s move to ESPN/ABC):
Another way of thinking about this is: we don’t have a Moneyball for political narratives yet, but if we end up getting one then a lot of the same repeated talking points we get every election cycle (Romney’s got the momentum! There must be invisible missing voters!) may fade to black, and that challenges the attitudes and identities of the more traditional journalists. This may be especially magnified if you think that thew new corridor is someone insulated from inputs outside their self-fulfilling/self-sustaining political narratives.
Sports commentary is pretty stupid, in general, but as annoying as Jon Gruden (for example) is, he does accurately describe the routes being run etc. Likewise for Joe Morgan with a lot of the ins and outs of a typical at bat. You could learn a lot from either of them than you could from Mark Halperin.
Even if baseball is eventually largely reduced to things like on-base percentage and PECOTA, there is a place for someone who understands how a pitcher uses different types of pitches. When it becomes clear that you can predict presidential elections by averaging polls, there’s no place for Candy Crowley to go.