What is machine learning, and how does it work?
Our latest Methods 101 video explains the basics of machine learning and how it allows our researchers to analyze data on a large scale.
Congress Soars to New Heights on Social Media
Assessing the Risks to Online Polls From Bogus Respondents
A Field Guide to Polling: Election 2020 Edition
How is polling done around the world?
When Online Survey Respondents Only ‘Select Some That Apply’
Growing and Improving Pew Research Center’s American Trends Panel
Response rates in telephone surveys have resumed their decline
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
External publications
