short read | Nov 9, 2016

Why 2016 election polls missed their mark

There is a great deal of speculation but no clear answers as to the cause of the disconnect, but there is one point of agreement: Across the board, polls underestimated Trump's level of support.

report | Sep 22, 2015

Coverage Error in Internet Surveys

With 89% of U.S. adults online, survey research is rapidly moving to the Web. But 89% is not 100%, and surveys that include only those who use the internet run the risk of producing biased results.

short read | Jan 7, 2015

Pew Research will call more cellphones in 2015

An estimated 46.5% of U.S. adults are cell-only today. To keep pace with this trend, the Pew Research Center will increase the percentage of respondents interviewed on cellphones in its typical national telephone surveys to 65%.

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