Pick Up Six

Sen. Amy Klobuchar's endorsement of Barack Obama, along with news that six additional members of the North Carolina's congressional delegation will back Obama before the state's May 6 primary, may well signal the beginning of the open spigot for Obama and his superdelegates.

The campaign does not have a reservoir of privately-committed superdelegates just waiting to burst forth on Obama's behalf; if they had, you -- we - would know about them. Peer pressure, more than anything else, will force superdelegates off the fence.