A Resource for State Preelection Polling
If a battleground state poll does not adjust for having too many college graduates, it is at risk of overstating support for a Democratic presidential candidate. The Current Population Survey provides high-quality data that can mitigate overrepresentation of college graduates.
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
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
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