Numbers, Facts and Trends Shaping Your World

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    Methodology

    The analysis of changes in party identification over time is based on a compilation of 266 telephone surveys and more than 360,000 interviews among registered voters conducted by Pew Research Center from January 1994 to September 2019. These surveys are combined into one large data file that can be sorted according to a range of […]

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    Appendix

    Categorization of battleground states in this report To identify battleground states for the November presidential election, researchers consulted several experts’ forecasts (including Larry Sabato’s Crystal Ball, the Cook Political Report, Inside Elections and Nate Cohn’s New York Times ratings) to come up with a categorization of each state as either likely to back the Democrat […]

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    Methodology

    The American Trends Panel survey methodology The American Trends Panel (ATP), created by Pew Research Center, is a nationally representative panel of randomly selected U.S. adults. Panelists participate via self-administered web surveys. Panelists who do not have internet access at home are provided with a tablet and wireless internet connection. The panel is being managed […]

  • report

    Methodology

    The American Trends Panel (ATP), created by Pew Research Center, is a nationally representative panel of randomly selected U.S. adults. Panelists participate via self-administered web surveys. Panelists who do not have internet access at home are provided with a tablet and wireless internet connection. The panel is being managed by Ipsos. Data in this report […]

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    Acknowledgments

    This report was made possible by The Pew Charitable Trusts. Pew Research Center is a subsidiary of The Pew Charitable Trusts, its primary funder. This report is a collaborative effort based on the input and analysis of the following individuals. Find related reports online at: www.pewresearch.org/pewresearch-org/journalism. Galen Stocking, Computational Social Scientist Katerina Eva Mata, Associate […]

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    1. The congressional social media landscape

    A living database of political communication In 2015, Pew Research Center launched an initiative to study political rhetoric on a large scale by building an ever-expanding database of political social media activity across multiple platforms, starting with Facebook and now including Twitter. To support this effort, researchers have spent hundreds of hours collecting, cleaning and […]