Report | Jun 30, 2021
Behind Biden’s 2020 Victory

A new analysis of 2020 validated voters examines change and continuity in the electorate, both of which contributed to Joe Biden’s victory. It looks at how new voters and voters who turned out in either 2016, 2018 or both voted in the 2020 presidential election, and offers a detailed portrait of the demographic composition of the 2020 electorate.

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All Methodological Research Publications

Short Read | May 5, 2022
10 facts about Americans and Twitter

23% of U.S. adults say they use Twitter. The share of Americans who use the platform has remained consistent over the past several years.

Short Read | Oct 22, 2021
How to access Pew Research Center survey data

Pew Research Center makes most of its datasets available for download once reporting has been completed for a given study. Here's how to find and access our data.

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Signature Reports

Mar 31, 2017
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.

Features

Feature | Jul 16, 2019
Methods 101 Video: How is polling done around the world?

International polling provides information about how people in different countries are thinking about issues like immigration, technology, religion, you name it. But polling in different parts of the world can be very challenging, because what works in one country may not work in a different country.

Feature | May 14, 2018
Video: Can we still trust polls?

Recent events – including the 2016 presidential election and Brexit – have rattled public confidence in polls. But this video explains why well-designed polls can still be trusted and remain an important way to measure public opinion.

Feature | Mar 21, 2018
Methods 101 Video: Survey Question Wording

The second video in Pew Research Center’s Methods 101 series helps explain question wording – a concept at the center of sound public opinion survey research – and why it’s important.

Feature | May 12, 2017
Methods 101 Video: 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.