Web Survey Methods

If a battleground state poll does not adjust for having too many college graduates, it is at risk of overstating support for a Democratic presidential candidate. The Current Population Survey provides high-quality data that can mitigate overrepresentation of college graduates.

Our response to the pandemic has included the difficult decision to suspend much of our international survey work until further notice.

While the growth of online interviewing is a prominent trend in polling, there is variation within that trend in how researchers recruit respondents. This study finds that sourcing affects data quality.

when designing an online survey questionnaire, there is more than one way to ask a respondent to select which options in a series applies to them.

Nick Bertoni, manager of the American Trends Panel, explains how the panel works and what its recent expansion means for our future survey work.

Pew Research Center’s American Trends Panel (ATP) is now the Center’s principal source of data for U.S. public opinion research.

What does the migration to online polling mean for the country's trove of public opinion data gathered over the past four decades?

Pew Research Center conducts surveys over the phone and, increasingly, online. But these two formats don’t always produce identical results.

A new telephone survey experiment finds that an opinion poll drawn from a commercial voter file produces results similar to those from a sample based on random-digit dialing.

In the wake of Donald Trump’s 2016 election victory, an overwhelming majority of those who said they had voted for him had “warm” feelings for him.