Society · Facts & sources
4 sourced facts about the historical archive of survey and polling data, each with the context behind the number. 4 more are in today's round and appear here after it closes.
Answer160 countries
The Gallup World Poll covers more than 98% of the world's adult population, using nationally representative surveys in nearly every country.
Source: Wikipedia (Gallup, Inc.) (2005) en.wikipedia.org
Answerabout 29 million
YouGov, founded in 2000, built one of the world's largest online research panels spanning the UK, the Americas, Europe and Asia-Pacific.
Source: Wikipedia (YouGov) (2024) en.wikipedia.org
Answer£335.3 million
Despite the strong revenue figure, YouGov actually posted an operating loss that year.
Source: Wikipedia (YouGov) (2024) en.wikipedia.org
Answerabout 45 million households
The system also pulls from about 75 million devices, blending traditional panel data with much larger big-data sources.
Source: Wikipedia (Nielsen ratings) (2025) en.wikipedia.org