The probability of believing in a link between vaccines and autism is much higher among conservatives than liberals — regardless of whether people identified as Democrats, Republicans or independents. The apparent impact of ideology is most pronounced among political independents. There is no evidence that support for the vaccine-autism link is higher among strong liberals. …That liberals are least likely to believe in a link between vaccines and autism might be surprising given well-publicized reports about low childhood vaccination rates in wealthy, liberal enclaves in states such as California. It may be that anti-vaccination liberals are quite rare and that their existence is mostly anecdotal.
Didn’t expect this at all. I’m thinking that at least some of this is tied to the self-reporting. We don’t actually know their political views, only their claimed identity.