The NY Times has a piece on Drew Westen's influence on the the 2008 campaign. It includes an interesting quote from Frank Luntz:
Even Frank Luntz, the architect of many Republican rhetorical successes, says Dr. Westen is fostering a sea change.
“It’s as though the Republicans have fallen back 15 years in their communication,” Mr. Luntz said, “at the very moment when Democrats vaulted ahead 15 years.”
Mr. Luntz said the Obama campaign often mirrored Dr. Westen’s approach.