Pew Research Center is committed to meeting the highest methodological standards — and to exploring the newest frontiers of research. Learn more about the methods the Center uses to conduct objective, non-partisan research on a wide range of topics that is trusted around the world.

course | Oct 19, 2022

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.

report | Apr 8, 2021

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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