One particular problem is named differential nonresponse: Whereas a ballot like The Put up’s contacts a random pattern of the inhabitants, completely different classes of individuals might reply at completely different charges. As an example, school graduates and individuals who volunteer of their group have lengthy been extra prone to reply surveys than these in different teams. Polls have traditionally addressed this concern by calibrating samples to match census benchmarks for the inhabitants by gender, schooling, age, race, ethnicity, intercourse and area. But errors throughout many 2020 pre-election polls recommend that extra must be performed.
https://www.washingtonpost.com/dc-md-va/2021/10/29/how-post-conducted-its-polls-virginia-governors-race/ | How we carried out polls within the Virginia governor’s election
