Especially important:
"Since the public has become aware of the data, several people have come forward to challenge our initial findings, specifically, that supporters of the Tea Party appear racially intolerant. A principal charge, one not without intellectual merit, is that the observed relationship between support for the Tea Party and racial resentment is more about the relatively conservative politics of Tea Partiers than racism. Indeed, conservatives tend to believe in a small government, one that doesn't do much to help people who, they believe, should make an effort to do for themselves. This is certainly a legitimate view; it's one to which many Americans have adhered from the beginning of the Republic. In short, some of our critics charge that, instead of the racism we observe associated with support for the Tea Party, we're merely observing Tea Partiers' conservatism at work. In other words, support for the Tea Party, they suggest, is simply a proxy for conservatism.
To address this issue, we turn to regression, a statistical technique that allows analysts to tease out how one variable affects another. This is important because it permits us to account for the presence of other variables that may also affect the outcome while isolating the impact of the effect of the variable of interest on the result. So, in this case, if support for the Tea Party is truly a proxy for conservatism, the relationship between racial resentment and support for the Tea Party should evaporate once we control for conservatism. Otherwise, there's something else going on with support for the Tea Party; it's not just conservatism. To make things a little easier, we combined all of the items (questions) that comprise racial resentment, making them into a scale.
As the figure shows, even as we account for conservatism and partisanship, support for the Tea Party remains a valid predictor of racial resentment. We're not saying that ideology isn't important, because it is: as people become more conservative, it increases by 23 percent the chance that they're racially resentful. Also, Democrats are 15 percent less likely than Republicans to be racially resentful. Even so, support for the Tea Party makes one 25 percent more likely to be racially resentful than those who don't support the Tea Party.
Similar results obtain for racial profiling and the ability for authorities to detain people without putting them on trial. Again, controlling for ideology (conservatism) and partisanship, support for the Tea Party increases the probability that individuals agree that it's okay to “racially profile someone on account of their race or religion” by approximately 27 percent. Support for the Tea Party also increases the probability, by 28 percent, that the authorities should have ability to detain individuals without being charged, for as long as authorities like. Of course, in both cases, conservatism also matters: increasing the likelihood that people will agree with racial profiling and indefinite detention by 30 and 33 percent, respectively."
