Matt Stoller on Beltway thinking.
When the Club for Growth pushed Toomey over Specter in the Pennsylvania primary I don't remember anyone treating them as naive outsiders. Sure there was talk that Toomey would have a harder time winning the primary, but there wasn't this tut-tutting of their stupidity. A lot of money was spent, both by Specter (especially) and Toomey, and Toomey almost won.