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.
Numbers, Facts and Trends Shaping Your World
About Pew Research Center’s Summer 2020 Global Attitudes Survey Results for the survey are based on telephone interviews conducted under the direction of Gallup and Abt Associates. The results are based on national samples, unless otherwise noted. Here are more details about our international survey methodology and country-specific sample designs.