Across 3 prediction market platforms, "Will Fernando Haddad win the 2026 Brazilian presidential election?" has a consensus probability of 47.5%. Manifold: 1.5%, Gemini: 47.5%, Polymarket: 2.5%. Consensus via geometric mean of odds (Satopaa et al., 2014), validated by IARPA ACE tournament.
Computed from 3 platforms using geometric mean of odds (Satopaa et al., 2014). This method was validated by the IARPA ACE forecasting tournament as the most accurate probability aggregation technique. Full methodology →
The only prediction market aggregator with academically validated cross-platform consensus.