Should Greg Walden Face a Primary Challenger?

The Club for Growth, the influential anti-spending organization, is so ticked at Congressmen Greg Walden (the guy I called out yesterday for attacking Obama's offer of modest entitlement reform) they are now calling for him to have a challenger in the next primary election.

I ordinarily don't support primary challengers, but for this guy, let's make an exception. (Below is the reminder of why:)