Democrats Made Gains From Multiple Sources in 2018 Midterm Victories
Our analysis of verified voters examines what 2016 voters and nonvoters did in the 2018 midterm elections and offers a detailed portrait of the demographic composition and vote choices of the 2018 electorate.
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
How is polling done around the world?
When Online Survey Respondents Only ‘Select Some That Apply’
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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