Brazil Presidential Election

CalibrationResearch on political prediction markets shows Polymarket has the lowest outcome-correctness rate of major platforms (67%), meaning prices here are structurally noisier and more prone to mispricing than on Kalshi or PredictIt — this is a feature for sophisticated traders who can identify the direction of the error. Long-horizon political contracts specifically show the strongest compression toward 50%, so if Tarcisio is trading as a clear favorite, the research suggests the market is understating his true win probability, and if he's a longshot, the market is likely overstating it.

RisksWith $44.9M in event volume spread across 10 outcomes, individual candidate contracts likely have thin standalone liquidity — the risk profile confirms near-zero spread volume on this specific contract, meaning getting in and out at fair value is harder than the headline event volume suggests. The extreme daily volatility (over 40% annualized per day) combined with a negative autocorrelation signal means price swings tend to reverse sharply, so momentum trades in either direction are likely to get faded — this market punishes late arrivals, consistent with documented findings that accurate-but-slow traders earn negative returns.