Among The Clintonites

A lovely crew as usual:

Greenberg, reacting to what he saw of Penn's polling when both worked on Blair's 2005 re-election, describes Penn's methods as "errant," his tests of messages as "biased" and "rigged" and his documentation lacking "transparency" and "the information normally delivered by a professional research organization."

Penn, in response to my query, defends his surveys for the Labor Party as "extremely accurate," says Greenberg was excluded from information because he was "not in the loop," and describes Greenberg's attacks as inaccurate and "unsubstantiated."