Few in the field of survey research have examined the problem of cell phones and surveys as closely over the last four years as Scott Keeter and his colleagues at the Pew Research Center. They conducted one of the first large-scale political surveys by cell phone two years ago and have been leaders in testing and developing new methods to conduct political surveys by combining samples of landline telephones and cell phone.
Today they released a new must-read report summarizing findings from "three major election surveys [conducted] with both cell phone and landline samples since the conclusion of the primaries." The verdict? "Pew's surveys this year suggest at least the possibility of a small bias in landline surveys."
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