Data Sources
Last updated: May 1, 2026
AFOS Analytics operates exclusively on public, auditable sources. Every claim on the platform cites its primary source. This page lists all regular sources.
Prediction markets
Polymarket (gamma-api.polymarket.com), real-money contract prices in USD. Updated every 30 minutes via public API. Markets covered: 2026 presidential, 1st round 2nd place, 1st round 3rd place, STF impeachment, 2026 Senate, 2026 inflation.
Electoral polls
Brazilian Superior Electoral Court (TSE), official base of registered polls. Updated via cron 3x/day (06:00, 12:00, 18:00 BRT). Institutes covered: AtlasIntel, Quaest/Genial, Datafolha, Real Time Big Data, Paraná Pesquisas, Vox Populi, Ipec, Nexus, Ideia, Datatrends, 100 Cidades, SETA, M B Barros, F. Façanha, A.F. Barbosa, Vox Brasil, and others (~17 institutes).
Journalistic coverage
Google News RSS (news.google.com/rss), aggregator. Primary outlets consulted regularly: Folha de S.Paulo, O Globo, Estadão, Veja, BBC Brasil, CNN Brasil, Poder360, JOTA, Gazeta do Povo, UOL, G1, Bloomberg Línea, Estado de Minas, O POVO, and others.
Global electoral calendar
IFES (International Foundation for Electoral Systems) and Wikipedia (consolidated). Coverage of 14 countries with national elections planned for 2026.
Glossary and terminology
Wikipedia, official sites of agencies (TSE, STF, Senate, Chamber), and Brazilian methodological literature (ABEP, FGV, Poder360).
We are not affiliated with any of the listed sources. Data used in accordance with each source's public terms. For corrections or removal requests: contact@afos-analytics.com.