report | Aug 25, 2021

How Call-In Options Affect Address-Based Web Surveys

One method to improve survey representation of the non-internet and less literate population is to allow people to take surveys offline. In March, we fielded a study to test the feasibility and effect of collecting data through respondent-initiated interactive voice response; here’s what we found.

report | Jun 30, 2021

Behind Biden’s 2020 Victory

A new analysis of 2020 validated voters examines change and continuity in the electorate, both of which contributed to Joe Biden’s victory. It looks at how new voters and voters who turned out in either 2016, 2018 or both voted in the 2020 presidential election, and offers a detailed portrait of the demographic composition of the 2020 electorate.

report | Jun 9, 2021

Measuring the Risks of Panel Conditioning in Survey Research

A new evaluation of the Center's national American Trends Panel finds little evidence that panel estimates are affected by errors associated with panel conditioning, a phenomenon that occurs when survey participation changes respondents’ true or reported behavior over time.

report | May 3, 2021

How Pew Research Center Uses Its National Public Opinion Reference Survey (NPORS)

In 2020, Pew Research Center launched a new project called the National Public Opinion Reference Survey (NPORS). NPORS is an annual, cross-sectional survey of U.S. adults. Respondents can answer either by paper or online, and they are selected using address-based sampling from the United States Postal Service’s computerized delivery sequence file.

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Signature Reports

report | Nov 19, 2019

A Field Guide to Polling: Election 2020 Edition

While survey research in the United States is a year-round undertaking, the public’s focus on polling is never more intense than during the run-up to a presidential election.

report | Mar 31, 2017

Are Telephone Polls Understating Support for Trump?

An experiment comparing responses to 27 questions fielded on both a telephone and a web survey found no significant mode differences in overall opinion about Trump or many of his signature policy positions.