Bagger biases

FiveThirtyEight.com:

More specifically, for tea party supporters, those abnormal views in every case but one or maybe two reflect higher expressed levels of racism, xenophobia, and homophobia. Some commenters wondered if TP approval is merely a proxy term for "white conservatives," and vice versa for disapprovers/"white liberals." However, in detailed multivariate results that control for ideology which Dr. Parker assured me by email he will soon publish in detail on the WISER website, tea party approval or disapproval is not simply a proxy for these labels, and does in fact have independent explanatory power of the level of intolerance expressed by whites. In any case, the idea that the recent Gallup demographic study "proves" that the views of tea partier supporters are "mainstream" is, it's fair to say, a fiction.