The Des Moines Register/Mediacom Iowa Poll, conducted by Selzer & Co., uses a well-regarded methodology to assess public opinion among Iowans. The poll typically involves random telephone interviews with a sample of registered voters, including both landlines and cell phones, to ensure a representative mix. Respondents are usually weighted to match demographic and political profiles of the state, enhancing accuracy. The margin of error and sample size can vary by survey but generally provide reliable insights on Iowa’s electorate, focusing on likely voters and key issues affecting their decisions .