As has been noted earlier, Bill Kristol did that with the Homeland Security pick, to his and his "sources" peril.
The ones who are yakking don't know. And the ones who do know ain't yakking :)
I'm still holding out for my candidate: Senator Mitch McConnell.
(A long shot, I know, but he's been awfully "dignified" lately---though still slicing/dicing his opponents' arguments.)