Brazil Presidential Election Second Round margin draws $186K in 24 hours, with a Flávio Bolsonaro win by under 4% at 40%

Brazil’s presidential runoff margin market recorded $186K in trading volume over 24 hours, with a Flávio Bolsonaro victory by under 4% priced at 40%. The polydict.app snapshot, timestamped Oct 15, 05:55 AM UTC, provides a view of trading in the margin contract alongside the broader election-winner market.

Winner and margin contracts tell different stories

According to polydict.app, the separate Brazil Presidential Election market put Flávio Bolsonaro at 83%, with $706K in 24-hour volume. Both that contract and the second-round margin market list an end date of Oct 26, 2026.

The two prices address different outcomes: 83% concerns Bolsonaro winning the election, while 40% concerns a specific victory-margin range. The latter should not be read as his overall chance of winning or as a forecast of his vote share.

The margin contract appeared at No. 33 on the supplied board and listed seven additional outcomes. The broader election contract appeared at No. 8, with one additional outcome. The snapshot does not provide prices for the other margin ranges, limiting comparisons across possible runoff results.

A snapshot, not evidence of a shift

The supplied figures show current pricing and 24-hour turnover, but no earlier observations. They therefore do not establish whether traders have recently increased or reduced the probability assigned to a narrow Bolsonaro victory.

According to polydict.app, the displayed markets use Polymarket’s order book and settle through its contracts. Resolution depends on each contract’s rules and designated source, making the precise margin definitions important when interpreting the displayed probabilities.

What it means for prediction markets

• Keep the outcomes separate: The 40% margin price and 83% winner price describe different propositions, not competing estimates of the same event.
• Volume is not direction: The $186K in turnover measures activity; without historical prices, it does not demonstrate a change in sentiment.
• Check the full margin rules: The supplied board omits the other seven outcome prices and detailed range definitions, so it cannot establish the complete distribution of expected victory margins.