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.
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Methodological Research
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Personal finance questions elicit slightly different answers in phone surveys than online
People polled by telephone are slightly less likely than those interviewed online to say their personal finances are in “poor shape.”
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Q&A: How and why Pew Research Center surveyed Americans on online harassment
Read a Q&A with Maeve Duggan, Pew Research Center research associate, on our survey examining online harassment in the United States.
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Few mode effects found when Americans are asked about their news consumption habits
A new analysis sheds light on concerns raised among pollsters that the medium by which a survey question is asked – its mode – can affect responses.
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Q&A: Pew Research Center’s president on key issues in U.S. polling
Read a Q&A with Michael Dimock, president of Pew Research Center, on recent developments in public opinion polling and what lies ahead.
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What Low Response Rates Mean for Telephone Surveys
Telephone polls still provide accurate data on a wide range of social, demographic and political variables, but some weaknesses persist.
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Methods 101: Random Sampling
The first video in Pew Research Center’s Methods 101 series helps explain random sampling – a concept that lies at the heart of all probability-based survey research – and why it’s important.
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How can a survey of 1,000 people tell you what the whole U.S. thinks?
The first video in our “Methods 101” series is about random sampling, a concept that undergirds all probability-based survey research. Here’s how it works.
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Q&A: Political polls and the 2016 election
Courtney Kennedy of Pew Research Center, who chaired survey researchers organization AAPOR’s task force on political polling in the 2016 U.S. elections, discuss the group’s findings and recommendations.
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Q&A: Using Google search data to study public interest in the Flint water crisis
Read an interview with Director of Journalism Research Amy Mitchell, who helped author the study.
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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.
Signature Reports
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.
Comparing Two Types of Online Survey Samples
Pew Research Center conducted a study to compare the accuracy of six online surveys of U.S. adults – three from probability-based panels and three from opt-in sources. On average, the absolute error on opt-in samples was about twice that of probability-based panels.
Q&A: What is the American Trends Panel, and how has it changed?
Members of the American Trends Panel can now take our surveys online or over the phone with an interviewer.
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.
