The analysis in this report is based on a Pew Research Center survey conducted March 7-April 4, 2016, among a national sample of 1,520 adults, 18 years of age or older, living in all 50 U.S. states and the District of Columbia. Of these respondents, 381 were interviewed on a landline telephone, and 1,139 were interviewed on a cellphone, including 636 who had no landline telephone. The survey was conducted by interviewers at Princeton Data Source under the direction of Princeton Survey Research Associates International. A combination of landline and cellphone random-digit-dial samples were used; both samples were provided by Survey Sampling International. Interviews were conducted in English and Spanish. Respondents in the landline sample were selected by randomly asking for the youngest adult male or female who was at home. Interviews in the cellphone sample were conducted with the person who answered the phone, if that person was 18 years of age or older.
