Numbers, Facts and Trends Shaping Your World

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    Methodology

    This report is based on a pair of Pew Research Center surveys and a series of in-depth interviews. It draws on a nationally representative survey of U.S. adults who are members of the Center’s American Trends Panel (ATP), a survey of U.S.-based experts in artificial intelligence (AI) and 30 in-depth interviews with experts who participated […]

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    Appendix C: Classifying European political parties

    Classifying parties as populist Although experts generally agree that populist political leaders or parties display high levels of anti-elitism, definitions of populism vary. We use three measures to classify populist parties: anti-elite ratings from the 2019 Chapel Hill Expert Survey (CHES), Norris’ Global Party Survey and The PopuList. We define a party as populist when […]

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    2024 National Public Opinion Reference Survey Methodology

    Summary SSRS conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from Feb. 1, 2024, to June 10, 2024. Participants were first mailed an invitation to complete an online survey. A paper survey was later mailed to those who did not […]

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    Methodology

    The American Trends Panel survey methodology Overview Data in this report comes from Wave 158 of the American Trends Panel (ATP), Pew Research Center’s nationally representative panel of randomly selected U.S. adults. The survey was conducted from Oct. 21 to 27, 2024. A total of 9,593 panelists responded out of 10,612 who were sampled, for […]