METHODOLOGY
This survey of 1,035 adults was conducted Aug. 4 by The Marist Poll sponsored in partnership with McClatchy. People 18 and older who live in the continental U.S. were interviewed by telephone using live interviewers. Landline numbers were randomly selected based on a list of telephone exchanges from throughout the nation from ASDE Survey Sampler Inc. The exchanges were selected to ensure that each region was represented in proportion to its population. This sample was supplemented by respondents reached through random dialing of cellphone numbers from Survey Sampling International. The two samples were then combined and balanced to reflect the 2010 census results for age, gender, income, race and region. Respondents in the household were selected by asking for the youngest male. Results are statistically significant within plus or minus 3 percentage points.
There are 806 registered voters. The results for this subset are statistically significant within plus or minus 3.5 percentage points. There are 342 Republicans and Republican leaning independents. The error margin for this subset is plus or minus 5.3 percentage points. The error margin increases for cross-tabulations.
http://www.mcclatchydc.com/2014/08/13/236368/clintons-lead-over-gop-candidates.html
