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Elections
Brazil presidential runoff: Flávio Bolsonaro margin of victory
kalshi

How large will Bolsonaro's victory be?

Oct 5, 2026, 5:00 PM EST - Oct 25, 2027, 10:00 AM EST
Total volume:
$25,235
Volume 24h:
$3,862
392%
Liquidity:
N/AN/A
Open interest:
$11,589
13%

Flávio Bolsonaro, ≥1%

 - Kalshi

Flávio Bolsonaro, ≥1% - Kalshi

1W

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolves Oct 25, 2027

Will the margin of victory for Flávio Bolsonaro in the 2026 Brazilian presidential runoff be at least 1%?

86%chance
Amount

$

Trade on
kalshi

Trade on Kalshi

Join Kalshi and score $25 for your first trade.At 88¢ buys you 114 shares | Odds: 86% Total Payout: $114 | Net Profit: $14 Multiplier: 1.14x | ROI: 14% | APY: 13% 375 days to resolution
You will be redirected to the platform to complete this trade.
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
kalshi

Flávio Bolsonaro, ≥1%

Trade
86%
1%
Yes 88¢No 16¢
4¢
N/A
$1,773
25%
7,844%
$1,358
1y 1w
active
kalshi

Flávio Bolsonaro, ≥3%

74%
Yes 84¢No 25¢
9¢
N/A
$2,701
1%
313%
$710
1y 1w
active
kalshi

Flávio Bolsonaro, ≥4%

57%
Yes 68¢No 98¢
66¢
N/A
$820
27,223%
N/A
$820
1y 1w
active
kalshi

Flávio Bolsonaro, ≥7%

27%
3%
Yes 26¢No 75¢
1¢
N/A
$2,561
15%
N/A
$1,829
1y 1w
active
kalshi

Flávio Bolsonaro, ≥5%

21%
26%
Yes 32¢No 84¢
16¢
N/A
$7,904
37%
8,220%
$3,855
1y 1w
active
kalshi

Flávio Bolsonaro, ≥11%

4%
2%
Yes 5¢No 96¢
1¢
N/A
$1,323
0.38%
N/A
$927
1y 1w
active
kalshi

Flávio Bolsonaro, ≥9%

3%
Yes 10¢No 96¢
6¢
N/A
$8,154
2%
19%
$2,091
1y 1w
active
kalshi

Flávio Bolsonaro, ≥6%

N/A
N/A
39¢
N/A
N/A
N/A
N/A
N/A
1y 1w
active
Total markets: 8

Description

This event tracks the potential electoral performance of Flávio Bolsonaro in a future Brazilian presidential runoff. It focuses on measuring the difference between his vote share and his closest rival's share, should he win. The outcome depends purely on the size of his victory margin relative to specific thresholds.

Kalshi

All markets under this event assess whether Flávio Bolsonaro achieves a victory margin of at least 1%, 3%, 5%, 7%, 9%, or 11% in the 2026 Brazilian presidential runoff. A 'Yes' outcome occurs if his share of valid votes (excluding blank and null votes) minus that of his nearest competitor meets or exceeds the specified threshold. Positive margins indicate a win for Flávio Bolsonaro, negative margins a loss, and zero a tie for first place. Each threshold is inclusive of its lower bound and exclusive of its upper bound, with no rounding applied. If Flávio Bolsonaro contests the election under multiple party affiliations or listings, all votes for him are aggregated. The secondary rules consistently define margin calculation across all markets, ensuring uniform evaluation regardless of the specific threshold being assessed.

Frequently asked questions

On Kalshi, the dashboard for the Brazilian presidential runoff tracks the implied probability of Flávio Bolsonaro winning by a specific margin. You'll find real-time odds reflecting trader sentiment, a price history chart showing how the market has moved over time, and the current 24-hour trading volume, which is $3,862. Currently, the total volume traded in this market is $25,235. This allows participants to gauge expectations surrounding the election outcome and potentially capitalize on perceived mispricings.

Currently, prediction market odds offer a distinct perspective compared to traditional analyst forecasts for the Brazilian presidential runoff. While polls and expert opinions provide valuable insights, this market aggregates the wisdom of the crowd, reflecting a diverse range of informed opinions. Discrepancies may arise due to differing methodologies, biases, or access to information. It’s important to consider both sources when forming your own assessment of the likely outcome, and to understand that this market represents a forward-looking probability assessment based on active trading.

On Kalshi, this market is priced using a continuous double auction, meaning traders buy and sell contracts representing different potential outcomes. The price of a contract reflects the probability of that outcome occurring, as perceived by the market participants. On Kalshi, prices reflect that venue's order book, liquidity, and how traders price the outcome right now. As more traders participate and new information becomes available, the prices adjust accordingly, creating a dynamic and real-time assessment of the election's potential results. The current market price indicates what traders are collectively willing to pay for exposure to a specific margin of victory for Flávio Bolsonaro.

This market resolves around Oct 25, 2027, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on the official margin of victory declared by the Brazilian electoral authority. The final price of contracts will reflect the actual result, allowing traders to realize gains or losses based on the accuracy of their predictions. It's important to monitor news sources and official announcements as the resolution date approaches to stay informed about the latest developments.

Several signals or events could significantly move this market before resolution. Major developments in the campaign, such as significant policy announcements from either candidate, unexpected endorsements, or shifts in polling data, could all impact trader sentiment. Economic news, particularly regarding Brazil's economic performance or forecasts, could also play a role. Furthermore, any controversies or scandals involving either candidate have the potential to cause substantial price fluctuations in this market as traders react to new information and adjust their expectations.