Confronting 2016 and 2020 Polling Limitations
Like many organizations, the Center is working to understand why election polls have underestimated GOP support and what adjustments may be in order.
What 2020’s Election Poll Errors Tell Us About the Accuracy of Issue Polling
Measuring News Consumption in a Digital Era
Democrats Made Gains From Multiple Sources in 2018 Midterm Victories
Measuring Religion in Pew Research Center’s American Trends Panel
A Resource for State Preelection Polling
Congress Soars to New Heights on Social Media
What is machine learning, and how does it work?
Assessing the Risks to Online Polls From Bogus Respondents
A Field Guide to Polling: Election 2020 Edition
Survey Sampling Strategies: Random-Digit Dial vs. Voter Files
An examination of the 2016 electorate, based on validated voters
Commercial Voter Files and the Study of U.S. Politics
Video: What are nonprobability surveys?
Sharing the News in a Polarized Congress
our other work
Data Labs
Bots in the Twittersphere
Q&A: How Pew Research Center identified bots on Twitter
Sharing the News in a Polarized Congress
Analyzing Conservative legislators and Facebook sharing
External publications
Signature reports
For Weighting Online Opt-In Samples, What Matters Most?
Evaluating Online Nonprobability Surveys
Assessing the Representativeness of Public Opinion Surveys
Building Pew Research Center’s American Trends Panel
