Science · Facts & sources
4 sourced facts about the data points and methodology behind how polls are measured, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answer±4 percentage points
Gallup's routine national polls interview about 1,000 adults; a much larger sample would be needed to shrink the margin of error further.
Source: Gallup (2024) news.gallup.com
Answerabout 6%
Response rates fell from about 7% in 2017 to 6% in 2018, continuing a long decline in telephone survey participation.
Source: Pew Research Center (2018) pewresearch.org
Answerabout 10,000
Panel members answer periodic online surveys instead of being freshly recruited for every single poll.
Source: Pew Research Center (2014) pewresearch.org
Answer59,599 respondents
That total was gathered across 30 national samples, tracking more than 5,900 variables about American opinions and behavior.
Source: Wikipedia (General Social Survey) (2014) en.wikipedia.org