All Mood of the Nation questionnaires are designed by the McCourtney Institute polling team, with the fieldwork conducted by YouGov, an online polling organization. The YouGov panel includes over 1.8 million individuals who agree to complete occasional surveys. The 1,000 individuals who completed the McCourtney Mood of the Nation Poll were matched to the joint distribution from the Census’s American Community Survey in terms of age, sex, race/ethnicity, and years of education. The frame was augmented by matching to the November 2010 Current Population Survey and the Pew Religious Life Survey in order to include voter registration, political interest and party identification in the selection model. The unweighted data are broadly representative of the U.S. population in terms of age, education, and region.
The data have been weighted to adjust for variation in the sample from the adult United States population with respect to demographic variables such as geographic region, gender, race/ethnicity, age, and education, and political variables such as voter registration status and political interest. Weighting details are described in a paper by Ansolabehere and Rivers.
 Ansolabehere, Stephen, and Douglas Rivers. (2013) “Cooperative survey research.” Annual Review of Political Science 16: 307-329.