TOTAL VOLUME:

$138.4b

24H VOL:

$96,535,358

24H TRANSACTIONS:

2,495,670,182

OPEN INTEREST:

$1,525,921,801

457,804

Markets across

34,744

events

MATCHED EVENTS:

2,812

PLATFORM COVERAGE:

5

Polymarket:

39%

VS.

Kalshi:

61%

BETA
Dashboards
Tour
All
Politics
Brazil Presidential Election First Round Winner
kalshi
polymarket

Who will win Brazil Presidential Election?

Volume:
$7,421,652

Flavio Bolsonaro

all

2 markets

Polymarket

Kalshi

consensus

News

Positive

Negative

Neutral

Hover marker for details

Vol.

·

Resolved Oct 5, 2026

Closed: Oct 4, 11:40 PM EST

polymarket

Polymarket

View
Outcome
Trade
Chance %
Price
Spread
Liquidity
Volume
24h
7d
Open Interest
Ends in
Result
polymarket

Flavio Bolsonaro

View
100%
60%
Yes 100¢No 0¢
0.1¢
N/A
$2,618,505
N/A
N/A
N/A
Settled
Yes
kalshi

Flávio Bolsonaro

100%
60%
Yes 100¢No 0¢
100¢
N/A
$498,306
N/A
N/A
$186,536
2mo 3w 3d
Yes
polymarket

Lula

0%
60%
Yes 0¢No 100¢
—
N/A
$3,409,755
N/A
N/A
N/A
Settled
No
kalshi

Luiz Inácio Lula da Silva

0%
64%
Yes 0¢No 100¢
100¢
N/A
$747,216
N/A
N/A
$333,514
2mo 3w 3d
No
kalshi

Fernando Haddad

0%
Yes 0¢No 100¢
100¢
N/A
$58,349
N/A
N/A
$57,754
2mo 3w 3d
No
polymarket

Hertz Dias

0%
Yes 0¢No 100¢
—
N/A
$13,303
N/A
N/A
N/A
Settled
No
polymarket

Veterinário Wilson Grassi

0%
Yes 0¢No 100¢
—
N/A
$10,323
N/A
N/A
N/A
Settled
No
polymarket

Samara

0%
Yes 0¢No 100¢
—
N/A
$10,302
N/A
N/A
N/A
Settled
No
polymarket

Edmilson Costa

0%
Yes 0¢No 100¢
—
N/A
$10,266
N/A
N/A
N/A
Settled
No
polymarket

Renan Santos

0%
Yes 0¢No 100¢
—
N/A
$8,552
N/A
N/A
N/A
Settled
No
kalshi

Renan Santos

0%
Yes 0¢No 100¢
100¢
N/A
$4,928
N/A
N/A
$3,517
2mo 3w 3d
No
polymarket

Escritor Augusto Cury

0%
Yes 0¢No 100¢
—
N/A
$7,951
N/A
N/A
N/A
Settled
No
polymarket

Rui Costa Pimenta

0%
Yes 0¢No 100¢
—
N/A
$5,484
N/A
N/A
N/A
Settled
No
polymarket

Ronaldo Caiado

0%
Yes 0¢No 100¢
—
N/A
$5,133
N/A
N/A
N/A
Settled
No
kalshi

Ronaldo Caiado

0%
Yes 0¢No 100¢
100¢
N/A
$2,755
N/A
N/A
$2,200
2mo 3w 3d
No
kalshi

Augusto Cury

0%
Yes 0¢No 100¢
100¢
N/A
$3,560
N/A
N/A
$3,560
2mo 3w 3d
No
kalshi

Romeu Zema

0%
Yes 0¢No 100¢
100¢
N/A
$2,870
N/A
N/A
$1,910
2mo 3w 3d
No
polymarket

Zema

0%
Yes 0¢No 100¢
—
N/A
$1,553
N/A
N/A
N/A
Settled
No
polymarket

Pablo Marçal

0%
Yes 0¢No 100¢
—
N/A
$1,195
N/A
N/A
N/A
Settled
No
kalshi

Tarcísio de Freitas

0%
Yes 0¢No 100¢
100¢
N/A
$1,051
N/A
N/A
$1,051
2mo 3w 3d
No
polymarket

Clariana Barao

0%
Yes 0¢No 100¢
—
N/A
$295
N/A
N/A
N/A
Settled
No
polymarket

Candidate A

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Candidate B

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Candidate C

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
polymarket

Candidate D

N/A
N/A
100¢
N/A
N/A
N/A
N/A
N/A
Settled
No
Total markets: 25 of 48

Intro

This market tracks whether Flávio Bolsonaro will win the first round of the 2026 Brazilian presidential election. Currently, the aggregated probability across Kalshi and Polymarket indicates a 99.7% chance of this outcome. This prediction market will resolve based on whether Renan Santos wins the first round of the 2026 Brazilian presidential election, according to official results. Given the differing candidate scopes between platforms—particularly the focus on candidates listed on Kalshi as highlighted in the resolution rules—traders should closely watch the official candidate lists published by the TSE before the election window closes on January 1, 2027.

PredictionHero - Resolution Divergence Alerts (RDA)

Divergence Detected

Issue: Polymarket includes a significantly larger candidate list than Kalshi, and specifies tie-breaking rules while Kalshi does not.Hero tip: Trade with caution on Polymarket due to the extensive candidate list and potential for 'Other' outcomes. Focus on the candidates listed on Kalshi for a more focused market.

Critical divergence points:

  • Polymarket: Resolves to the candidate with the most valid votes in the first round, breaking ties alphabetically based on full name as listed in the market. Resolves to 'Other' if no result is known by June 30, 2027. Source: TSE.
  • Kalshi: Resolves to Yes if any of the 8 listed candidates win the first round. No tie-breaking or 'Other' resolution criteria are specified.
Our PredictionHero Resolution Divergence Alerts (RDA) are there to help users identify potential differences across platforms. They do not replace or supersede the official rules and description of any prediction market. Users are solely responsible for reviewing and understanding the applicable rules and resolution criteria before placing any trade or bet. If you notice a potential inconsistency, discrepancy, or error in an alert, please report it to our team so we can review and improve the accuracy of our data.

Polymarket

A presidential election is scheduled to take place in Brazil on October 4, 2026. This market will resolve according to the listed candidate who receives the most valid votes in the first round of this election. Candidates will be primarily ranked by order of valid votes won. If two or more candidates are tied for any position, ties will be broken by alphabetical order of the candidates’ listed full names as they appear in this market. This market will resolve to the candidate that occupies the highest finishing position after applying this ranking. If the result of this election isn't known definitively by June 30, 2027, 11:59 PM ET, the market will resolve to "Other". This market will resolve based on the result of the election, as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the Brazilian government, specifically the Superior Electoral Court (Tribunal Superior Eleitoral, TSE) (e.g., https://dadosabertos.tse.jus.br/).

Kalshi

If Flávio Bolsonaro wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Luiz Inácio Lula da Silva wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Renan Santos wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Romeu Zema wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Fernando Haddad wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Ronaldo Caiado wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes. If Tarcísio de Freitas wins the first round of the 2026 Brazilian presidential election, then the market resolves to Yes.

Frequently asked questions

On Polymarket and Kalshi, this dashboard tracks the potential outcome of the Brazilian presidential election, aggregating data from both platforms to provide a consensus view. Currently, the combined volume across these markets is $7,421,652, with $5,811,237 traded in the last 24 hours. This allows traders to express their beliefs about who will win the first round of the election and profit from correctly anticipating the result. The dashboard displays the probabilities implied by the trading activity on each platform, offering a comprehensive look at market sentiment surrounding the Brazilian presidential election.

Prediction market odds often offer a different perspective than traditional polling averages. While polls capture stated preferences, this market reflects what people are willing to *bet* on, which can be a more accurate signal of belief. Polls can be affected by biases and strategic responses, whereas the financial incentive in this market encourages participants to express their genuine expectations. Historically, prediction markets have demonstrated a strong track record of forecasting election outcomes, sometimes outperforming traditional polls, though discrepancies can and do occur. It's important to consider both sources of information when forming an opinion.

Several signals or events could significantly impact this market. Major developments in the campaigns of the leading candidates, such as policy announcements or debates, could shift market sentiment. Unexpected economic news or political scandals involving any of the candidates could also cause price fluctuations. Changes in polling data, while not always directly correlated with market prices, can still influence trader behavior. Additionally, any significant geopolitical events or shifts in public opinion regarding Brazil could move the market. Monitoring these factors will be crucial for anyone looking to trade this market effectively.