Growing and Improving Pew Research Center’s American Trends Panel
Pew Research Center’s American Trends Panel (ATP) is now the Center’s principal source of data for U.S. public opinion research.
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A new telephone survey experiment finds that an opinion poll drawn from a commercial voter file produces results similar to those from a sample based on random-digit dialing.
Our latest Methods 101 video explores some of the ways these surveys differ from traditional probability-based polls.
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