Across 3 prediction market platforms, "Will Gretchen Whitmer win the 2028 US Presidential Election?" has a consensus probability of 0.5%. Polymarket: 0.9%, Manifold: 0.5%, Predictit: 2.0%. 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.