Does public opinion polling about issues still work?
National polls like the Center’s come within a few percentage points, on average, of benchmarks from high response rate federal surveys.
Numbers, Facts and Trends Shaping Your World
Former Research Analyst
Nick Hatley is a former research analyst focusing on survey methology.
National polls like the Center’s come within a few percentage points, on average, of benchmarks from high response rate federal surveys.
Public polling estimates on COVID-19 vaccination have been within about 2.8 points, on average, of the CDC’s calculated rate.
A new evaluation of the Center’s national American Trends Panel finds little evidence that panel estimates are affected by errors associated with panel conditioning, a phenomenon that occurs when survey participation changes respondents’ true or reported behavior over time.
Looking at final estimates of the outcome of the 2020 U.S. presidential race, 93% of national polls overstated the Democratic candidate’s support among voters, while nearly as many (88%) did so in 2016.
Given the errors in 2016 and 2020 election polling, how much should we trust polls that attempt to measure opinions on issues?
If a battleground state poll does not adjust for having too many college graduates, it is at risk of overstating support for a Democratic presidential candidate. The Current Population Survey provides high-quality data that can mitigate overrepresentation of college graduates.
While the growth of online interviewing is a prominent trend in polling, there is variation within that trend in how researchers recruit respondents. This study finds that sourcing affects data quality.
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