Rothenberg on Polling

I just found this article about polling from last week, by Stuart Rothenberg. It makes some good points about how polling works, what the pitfalls are, and the difference between partisan and non-partisan pollsters. I am not sure I share his bias for partisan polls, and I think he overvalues the cost to partisan pollsters of doing bad polls. But, the article shows how readers need to be discriminating in alanlyzing polling data.