The questions we have asked on our survey are are listed below and borrowed from standard questions used in other national polls, about the Tea Party and American politics in general. Our 2006 survey was a large (N=3000, as we reported in the op-ed), randomly chosen, nationally representative sample—all ages, all classes, all races, all parties, all religions, and so forth, and each in the right proportions. The survey firm we employed drew the sample from the national population using random digit dialing, whereby every phone number in the country has an equal probability of being called. In 2011 we interviewed everyone from the original sample who is still alive and traceable, and virtually everyone we could find this year agreed to the re-interview.