.... CSP’s survey was an non-probability based, opt-in online survey, administered by the conservative group, the Polling Company/Woman Trend, a small Washington-based agency that has collaborated with CSP on other occasions to produce surveys about Islam and Muslims. (We learned this after reaching out to the Polling Company to get more details about their methodology, which wasn’t released to the public when Gaffney began promoting the survey’s findings.)
According to the body that sets ethical standards for polling, the American Association for Public Opinion Research (AAPOR), opt-in surveys cannot be considered representative of the intended population, in this case Muslims. The AAPOR says that in these cases, “the pollster has no idea who is responding to the question” and that these kind of “polls do not have such a ‘grounded statistical tie’ to the population.” [loonwatch.com] Read more