John Quiggin, noting the overlap between AGW deniers and Obama birth certificate deniers in the Republican party, snarks
But I wouldn’t want to give the impression that over 50 per cent of Republicans are conspiracy theorists who believe in a secret plot to impose a Kenyan-socialist dictatorship as part of the UN/IPCC system of world government. On the contrary, the proportion is only about 25 per cent (more in the South). As on the global warming issue, the balance of opinion within the Republican Party holds to the sensible “sceptical” position: the science isn’t settled, the birth records are unclear, sightings of black helicopters need further investigation and so on. That’s good to know.