Sources & attribution

Sources & data attribution

Every data source the pipeline uses, with the attribution / license each one requires. Sources are listed in rough order of how much of the site's content they contribute to.

Polling & election data 35 Money in politics 3 Prediction markets 4 News & sentiment 1 Pollster trust signals 2 Voter registration 2 External race ratings 10

Wikipedia & Wikimedia Foundation

CC BY-SA 4.0

Race calendars, poll tables, candidate lists, historical outcomes, endorsements, ballot measures, voter registration overview tables, Cook PVI by district, AAPOR Transparency Initiative member list, external race ratings (Cook / Sabato / Inside Elections / DDHQ / FiveThirtyEight / Elections Daily / CNalysis / Split Ticket / Economist / RealClearPolitics — all sourced from per-race Predictions tables).

Per-poll citation_url links go directly to the Wikipedia article they were scraped from. Derivative content on this site is provided under the same CC BY-SA 4.0 license.

Original poll publishers

Per-pollster

Wikipedia poll tables cite the underlying pollster reports. Each poll row on the site links to its citation URL — the original report by Cook Political Report, Marist, Siena, Quinnipiac, Pew Research, AP-NORC, Suffolk, Marquette, Fox News / Beacon Research, Emerson, Monmouth, PPP, YouGov, Echelon Insights, SurveyUSA, Mason-Dixon, Cygnal, Change Research, GSG, Public Opinion Strategies, North Star Opinion Research, RMG Research, Rasmussen Reports, and others.

License of this site's derivative content

Aggregated content this site produces (poll averages, forecasts, race-page rollups, the external-rater leaderboard) inherits the most-restrictive license of the upstream sources used to produce it — primarily CC BY-SA 4.0. Project source code is on GitHub. Underlying data carries each source's own copyright / license as listed above.