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.
Survey Methods
Who Are You? The Art and Science of Measuring Identity
As a shop that studies human behavior through surveys and other social scientific techniques, we have a good line of sight into the contradictory nature of human preferences. Here’s a look at how we categorize our survey participants in ways that enhance our understanding of how people think and behave.
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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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.
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Q&A: A conversation about U.S. election polling problems in 2020
Here, we discuss the findings of a comprehensive report about the polling errors of 2020 and their implications for polling.
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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.
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Death penalty draws more Americans’ support online than in telephone surveys
The difference in support for the death penalty by survey mode has important consequences for understanding trends on the issue.
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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.
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Q&A: After misses in 2016 and 2020, does polling need to be fixed again? What our survey experts say
Polling organizations have taken close looks at how election surveys are designed, administered and analyzed. We are no exception.
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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?
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How we know the drop in Trump’s approval rating in January reflected a real shift in public opinion
The 9-point fall in approval was the largest change between two Pew Research Center polls since Donald Trump took office.
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Measuring Religion in Pew Research Center’s American Trends Panel
Since the establishment of the ATP, the Center has gradually migrated away from telephone polling and toward online survey administration, and since early 2019, the Center has conducted most of its U.S. polling on the ATP. This shift has major implications for the way the Center measures trends in American religion – including those from the Center’s flagship Religious Landscape Studies, which were conducted by phone in 2007 and 2014.
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Measuring News Consumption in a Digital Era
As news outlets morph and multiply, both surveys and passive data collection tools face challenges.
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