Our fast-changing world is being driven by advancing technology; shifting demographics and domestic and global public attitudes; and the rise of the millennial generation.  Tracking these important changes—using data-based research—helps policy analysts, government officials, and the public identify and prepare for future challenges. Pew’s research into critical trends is rigorous, nonpartisan, and timely—using analytical tools such as public opinion polling, online surveys and empirical research.

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Pew Research Center

  • Most immigrants arrested by ICE have prior criminal convictions, a big change from 2009

    • February 15, 2018

    Immigrants with past criminal convictions accounted for 74% of all arrests made by ICE agents in fiscal 2017. Read More

  • Q&A: The growing use of ‘voter files’ in studying the U.S. electorate

    • February 15, 2018

    Read a Q&A with Pew Research Center’s Ruth Igielnik and Scott Keeter about a recent study about voter files. Read More

  • Methodology

    • February 15, 2018

    Survey conducted Nov. 29 to Dec. 12, 2016 The commercial voter file data were matched to panelists who took part in the post-election survey of the American Trends Panel (ATP). The ATP, created by Pew Research Center, is a nationally representative panel of randomly selected U.S. adults recruited from landline and cellphone RDD surveys. Panelists […] Read More

  • Acknowledgements

    • February 15, 2018

    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: Research team            Ruth Igielnik, Research Associate Scott Keeter, Senior Survey Advisor Courtney Kennedy, Director, Survey […] Read More

  • 6. Commercial voter files in perspective

    • February 15, 2018

    Despite the potential value of commercial voter files, they are hardly perfect. The imperfections stem from a variety of sources. At their core, the files are a compilation of official records from each state and the District of Columbia, with the addition of information about both registered and unregistered adults from other sources. But the […] Read More

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