It's a sad commentary on the long-term success of leftism in the US that Allen is considered anything other than a moderate by anyone with a brain. Well, scoonie doesn't have a brain, but I mean even rational people.
Allen isn't a moderate, he votes with his party about 95% of the time. I wouldn't call him an extremist, he's just always in lock-step with the base of the party. If you call Allen a moderate you have to call Jon Corzine or John Kerry (the liberal equivalents of Allen) moderates also.