Cato Institute

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License.-https://creativecommons.org/licenses/by-nc-sa/4.0/ The Cato Institute Summer 2020 National Survey was conducted by the Cato Institute in collaboration with YouGov who fielded the survey. YouGov interviewed 2,108 American adults from July 1-6, 2020 who were then matched into a nationally representative sample of 2,000 Americans aged 18 and older. The margin of error is +/- 2.36 percentage points. This does not include other sources of non-sampling error, such as selection bias in panel participation or response to a particular survey. Questions and responses were randomized when feasi- ble. YouGov conducted the survey online with its proprie- tary Web-enabled survey software. Restrictions are put in place to ensure that only the people selected and con- tacted by YouGov are allowed to participate. Respondents were matched to a sampling frame on gender, age, race, education. The frame was constructed by stratified sampling from the full 2018 American Com- munity Survey (ACS) 1-year sample with selection within strata by weighted sampling with replacements (using the person weights on the public use file). The matched cases were weighted to the sampling frame using propensity scores. The matched cases and the frame were combined and a logistic regression was estimated for inclusion in the frame. The propensity score function included age, gender, race/ethnicity, years of education, and census region. The propensity scores were grouped into deciles of the estimated pro- pensity score in the frame and post-stratified accord- ing to these deciles. The weights were then post- stratified on 2016 Presidential vote choice, and a four- way stratification of gender, age (4-categories), race (4- categories), and education (4-categories), to produce the final weight.