Brazil election: Right-wing figures embrace Polymarket odds amid poll skepticism

Right-wing figures in Brazil are increasingly turning to Polymarket, a global prediction market, to gauge voter intent for the upcoming presidential runoff on October 25. This trend follows skepticism toward traditional opinion polls, which some claim underestimated the right-wing movement during the first round of voting.

The runoff features Senator Flavio Bolsonaro against the incumbent, Luiz Inácio Lula da Silva. While recent polls show Bolsonaro with a slight lead of approximately two percentage points—within the margin of error—Polymarket currently shows his probability of winning at 77 percent. This discrepancy has led to viral social media posts claiming the prediction market is a more accurate barometer than traditional polling.

Experts caution against using prediction markets as direct substitutes for opinion polls. Political scientist Carolina Botelho noted that while polls measure voting intentions at a specific moment, prediction markets merely record financial transactions. Polymarket itself stated that its platform constitutes “neither polls nor official projections, nor expressions of support for any candidacy.”