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.
Pew Research Center will call 75% cellphones for surveys in 2016
We’re making this change to ensure our survey samples properly represent the now roughly half (47%) of U.S. adults who only have a cellphone.
Advances in Telephone Survey Sampling
Telephone surveys face numerous challenges, but some positive developments have emerged, principally with respect to sampling.
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.
What we learned about surveying with mobile apps
No research has compared app-based surveys with polls administered via Web browsers. Our new, experimental work compares the results of these two modes.
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%.
Pew Research increases share of interviews conducted by cellphone
In the coming months, 60% of interviews in our national polls will be conducted via cellphones and 40% on landline phones.
