Methodology
Each year, Pew Research Center conducts several random-digit-dial (RDD) telephone (cellphones and landlines) surveys about political topics.[6. numoffset=”6″ Pew Research Center has gradually increased the amount of telephone interviewing it conducts on cellphones. In recent RDD surveys, roughly 80% of interviews have been conducted with respondents on cellphones and 20% have been conducted with respondents […]