Ask the Expert

Pew Research expert’s responses to frequently asked questions on polling and data

By Scott Keeter The survey data from the Pew Research Center’s 2011 survey of Muslim Americans are available to researchers for downloading. The dataset can be downloaded on the Datasets page of the Pew Research Center for the People & the Press. The telephone survey of 1,033 randomly-selected Muslim Americans was the second such study conducted […]

The Pew Research Center recently released an instant reaction poll gauging public views about the outcome of the presidential election, conducted online with Google. Director of Survey Research Scott Keeter describes the project.

Scott Keeter, Director of Survey Research, answers questions about the factors behind the growing partisan gap in American politics.

In our surveys this summer, we added a question about mobile internet connectivity to help us capture internet users who may access the internet on mobile devices.

Pollsters sometimes match a “generic” Republican or Democratic candidate against an incumbent, or use a generic ballot to forecast which party is ahead in congressional elections. How to read these polls.

Assessing the value of using the labels "moderate," "liberal" and "conservative" to describe the electorate.

Mark Hugo Lopez, associate director, Pew Hispanic Center, discusses the importance of the Latino Vote in the 2012 presidential election.

Pew Research Center experts answer questions about our survey results and methodology.

Scott Keeter, director of survey research, explains why pollsters switch from registered voters to likely voters in their samples as Election Day nears, and how the Pew Research Center determines who is likely to vote.

Senior research staff answer questions from readers relating to all the areas covered by our seven projects, ranging from polling techniques and findings, to media, technology, religious, demographic and global attitudes trends.