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Featured Methods Publications
How Public Polling Has Changed in the 21st Century
A new study found that 61% of national pollsters used different methods in 2022 than in 2016. And last year, 17% of pollsters used multiple methods to sample or interview people – up from 2% in 2016.
Public Opinion Polling Basics
By the end of our free, five-lesson course, you will know why we have polls, what the different kinds of polls are, how polling works and what you should look for in a poll.
National Public Opinion Reference Survey (NPORS)
NPORS is an annual survey of U.S. adults conducted by the Pew Research Center.
Confronting 2016 and 2020 Polling Limitations
Looking at final estimates of the outcome of the 2020 U.S. presidential race, 93% of national polls overstated the Democratic candidate’s support among voters, while nearly as many (88%) did so in 2016.
What 2020’s Election Poll Errors Tell Us About the Accuracy of Issue Polling
Given the errors in 2016 and 2020 election polling, how much should we trust polls that attempt to measure opinions on issues?
Key things to know about election polling in the United States
The real environment in which polls are conducted bears little resemblance to the idealized settings presented in textbooks.
More Methods Resources
Methods 101 Videos
Our series of brief explainer videos breaks down key topics in research methodology for non-expert audiences.
Decoded
A behind-the-scenes blog about research methods at Pew Research Center.
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