When you get him away from his secular social fascism John Quiggin is usually quite good.
This article on the-statistical-significance-of-focus-groups.
I wish to add a small nit. As Kevin Bonham has said numerous times there was a massive polling failure in the last election.
No polling firm has yet to fess up. Despite this their results on qualitative and quantitative. It is as it never occurred.
Until they do and tell us how they have changed their methods they deserve our distrust.
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