I have a BS in Statistics and a BS in Math. Reading through the interviews the pollsters are definitely hiding something when they won't address Hugh's question on the limit of Party identification. If you haven't done Math by contract, you might never have run into this please the customer effect. I would mention Global Warming in the same category. Don't forget Gallup had some bad polls and Axelrod told them they needed to come to the WH and explain THEIR methodology. Oh please, if there is nothing going on you don't summon pollsters to the WH and suddenly sent the DOJ after them over billing.