Ever wonder how we collect our data? Today, most polls are conducted online. But, most pollsters reject the idea that “one size fits all” when it comes to polling, so we still use phone calls or mail to reach people.
We’re in an era where the people most likely to respond to a poll are also the most likely to vote Democratic for president. Pew Research Center’s head methodologist Courtney Kennedy explains how pollsters are tackling this challenge to make samples as representative as possible.
NPORS is an annual survey of U.S. adults conducted by the Pew Research Center used to to produce benchmark estimates for several topics.
Explore trends in partisan identification among U.S. adults using data from Pew Research Center’s 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.
This piece explains why, when and how we are weighting our surveys on Americans’ past vote.
Detailed information on Pew Research Center international survey meethodology, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by survey, country and year.
Americans trust each other less than they did a few decades ago. We explore why this is, and why some are more trusting than others.
Polls are more useful to the public if people have realistic expectations about what surveys can do well – and what they cannot.
Test your knowledge of public opinion polling by taking our 10-question quiz.
