Tatishe Nteta (nteta@umass.edu)
Field Dates: July 25 –30, 2025 | Sample: 1,000 Respondents | Margin of Error: 3.5%
This University of Massachusetts Amherst Poll of 1,000 respondents nationally was conducted by YouGov July 25-30. YouGov interviewed 1,057 total respondents who were then matched down to a sample of 1,000 to produce the final dataset. The frame was constructed by stratified sampling from the full 2023 American Community Survey (ACS) one-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, region, and home ownership. The propensity scores were grouped into deciles of the estimated propensity score in the frame and post-stratified according to these deciles.
The weights were then post-stratified on 2020 and 2024 presidential vote choice as ranked on gender, age (4-categories), race (4-categories) and education (4-categories), to produce the final weight. The demographic marginals and their interlockings were based on the sample frame. The marginal distribution of 2020 presidential vote choice and its demographic interlockings were based on a politically representative “modeled frame” of US adults, using the 2019 American Community Survey (ACS) public use microdata file, public voter file records, the 2020 Current Population Survey (CPS) Voting and Registration supplements, the 2020 National Election Pool (NEP) exit poll, and the 2020 CES surveys, including demographics and 2020 presidential vote.
The marginal distribution of 2024 vote choice was based on official ballot counts compiled by the University of Florida Election Labs and CNN. Demographic interlockings for 2024 vote choice were based on CNN’s 2024 Exit Polls.
