2023 National Public Opinion Reference Survey (NPORS) Methodology
Summary Ipsos conducted the National Public Opinion Reference Survey (NPORS) for Pew Research Center using address-based sampling and a multimode protocol. The survey was fielded from May 19 to Sept. 5, 2023. Participants were first mailed an invitation to complete an online survey. A paper survey was later mailed to those who did not respond. […]