Musk Reacts to Flávio Bolsonaro’s Odds on a Betting Site Brazil Has Banned
Key Facts
Brazil’s presidential race between Lula and Flávio Bolsonaro remains within the polls’ margin of error. Elon Musk has now drawn attention to a betting market that shows the challenger ahead.
Elon Musk, owner of the social network X, replied ‘Wow’ on 20 September 2026 to a post showing Polymarket odds. The chart gave Flávio Bolsonaro, a senator and son of former president Jair Bolsonaro, a 58% chance of winning.
Why This Matters
Brazil holds its general election on 4 October, and President Luiz Inácio Lula da Silva seeks a fourth term. Flávio Bolsonaro is the candidate of the right-wing Liberal Party, PL.
About 158.7 million Brazilians are registered to vote, and voting is compulsory for literate citizens aged 18 to 70. They will also choose all 513 federal deputies and 54 of the 81 senators.
Musk’s X was suspended in Brazil in 2024 after a dispute with the Supreme Court, so his comments draw attention. Polymarket lets users trade contracts on real-world events, and prices reflect traders’ bets rather than voter samples.
The post therefore touches three sensitive points at once: foreign influence, a banned market and a tight race. It came exactly two weeks before the first round, as campaigns fight over a small pool of undecided voters.
What Musk Reacted To
The post Musk answered showed Flávio at 58% and Lula at 42% on Polymarket’s main Brazil market, Poder360 reported. Musk wrote only ‘Wow’ and gave no further comment on the race or on either candidate.
Poder360 stressed that Polymarket is not an election poll and uses no representative sample or margin of error. The outlet said the percentages reflect only the behaviour of those placing bets.
Flávio first overtook Lula on the platform around 10 September, when Crypto Briefing put him at 52% against 45%. Earlier in 2026, Lula had led on both the prediction market and in conventional polls, the same report said.
By 21 September, Polymarket’s own page showed about US$151.9 million traded on the winner market since September 2025. The page listed Flávio at 57.5% and Lula at 42%, with every other candidate below 1%.
Musk’s History With Brazil’s Courts
Musk’s clash with Brazil began in April 2024, when he refused court orders to block certain accounts on X. Supreme Court Justice Alexandre de Moraes then added Musk to an inquiry into fake news and opened an obstruction probe, CNBC reported.
Musk called the orders unconstitutional and demanded that Moraes resign. X closed its Brazilian office on 17 August 2024, after Moraes threatened to arrest its legal representative.
When X failed to name a new representative, Moraes ordered the platform suspended nationwide from 30 August 2024. A five-judge panel of the Supreme Court upheld the suspension unanimously on 2 September.
The ban was lifted on 8 October 2024, after 39 days, once X complied with the court’s demands. X paid fines totalling R$28.6 million (about US$5.7 million at the time) and appointed a legal representative, PPC Land reported.
A Market Brazil Has Blocked
The National Monetary Council, Brazil’s top financial policy body, issued Resolution 5.298 on 24 April, Exame reported. It bans derivative contracts on sporting, political, electoral, social and entertainment events.
The Central Bank said the push to curb prediction markets came from the Finance Ministry, according to Exame. The measure fits the Lula government’s wider drive against online betting, which it links to household debt.
On 24 April, the Finance Ministry’s betting secretariat ordered Polymarket and 26 other sites blocked, Agência Pública reported. Polymarket began restricting Brazilian users in July, allowing them only to close positions, Cointelegraph Brasil reported.
Cointelegraph Brasil said the change appeared in Polymarket’s technical documentation on 7 July, citing compliance with local rules. Agência Pública counted about US$141.7 million in bets on Brazil’s elections as of 2 September.
It also found that a Portuguese-language Polymarket account published 103 posts on the Brazilian election by 24 August. The Rio Times has reported on how the ban has struggled to stop the markets.
What the Polls Show
Datafolha, one of Brazil’s main pollsters, interviewed 2,002 voters on 15 and 16 September. It found Lula at 46% and Flávio at 44% in a runoff, within the two-point margin of error.
In the first round, Lula had 39% and Flávio 36%, according to the survey published on 17 September. Both men were rejected by 47% of voters, and Lula’s government had 48% approval against 50% disapproval.
Quaest, another major pollster, interviewed 2,004 voters from 10 to 13 September. It put Flávio at 42% and Lula at 40% in a runoff, but Lula led the first round 36% to 31%.
AtlasIntel, polling for Bloomberg, heard 5,000 voters from 4 to 9 September and found a near tie. Its runoff scenario gave Flávio 46.4% and Lula 46.2%, with a one-point margin of error, CNN Brasil reported.
PoderData’s survey of 3,000 people from 30 August to 2 September had Lula at 37% and Flávio at 34%. In its runoff scenario, Flávio had 45% and Lula 44%, Gazeta do Povo reported.
Why Bettors and Pollsters Disagree
Every recent poll places the runoff within the margin of error, while Polymarket shows a clear favourite. Poder360 noted that Polymarket is not a poll and reflects bettors, many of them foreign.
Polymarket’s page says traders appear to price in a consolidation of right-wing voters behind Flávio. Crypto Briefing noted that the Brazilian ban may skew the market further towards international traders.
The Election Calendar
The first round of voting takes place on Sunday 4 October 2026. If no candidate wins more than half the valid votes, the top two meet in a runoff on 25 October.
The last contest was the closest since Brazil’s return to democracy, with Lula beating Jair Bolsonaro by 50.9% to 49.1%. Jair Bolsonaro was convicted in September 2025 of plotting a coup and sentenced to 27 years in prison.
What It Means If You Follow the Race From Abroad
For investors, prediction-market prices are a gauge of sentiment among traders, not a forecast of Brazilian voters’ intentions. Polls registered with the Superior Electoral Court, Brazil’s election authority, remain the benchmark for the race.
For Brazilians, trading on Polymarket or 26 other blocked sites breaches the April 2026 rules. Anyone following foreign commentary on the vote should check it against the published polls and their margins of error.
What Is Not Yet Known
Musk did not explain his one-word reply or say whether he backs any candidate. It is not clear how many Brazilians are still trading on the platform through workarounds.
Brazilian authorities have not said whether they will act against the promotion of election bets on social media. Nor is it known whether the betting odds will move closer to the polls as the first round approaches.
Frequently Asked Questions
Why does Musk’s post about Polymarket matter?
Musk owns X, which Brazil’s Supreme Court suspended for 39 days in 2024. His comment also promotes a platform that Brazil banned in April 2026.
Is Polymarket legal in Brazil?
No. Brazil banned political prediction contracts in April 2026 and ordered Polymarket’s website blocked.
Who leads the polls in Brazil’s presidential race?
Datafolha’s 15 to 16 September survey had Lula at 46% and Flávio Bolsonaro at 44% in a runoff. That is a statistical tie.
When will Brazil know its next president?
The first round is on 4 October 2026. If no candidate wins a majority, a runoff follows on 25 October.
Sources: Poder360, Musk reacts to Flávio’s Polymarket rise, Polymarket, Brazil presidential election market, Crypto Briefing, Flávio overtakes Lula on Polymarket, Agência Pública, Polymarket promotes Brazil election bets despite ban, Exame, CMN bans prediction-market derivatives, Cointelegraph Brasil, Polymarket restricts Brazilian users, Reuters via Investing.com, Datafolha runoff poll, Poder360, Quaest runoff poll, CNN Brasil, AtlasIntel/Bloomberg runoff poll, Gazeta do Povo, PoderData September poll, CNBC, Moraes opens inquiry into Musk, Wikipedia, blocking of X in Brazil, PPC Land, Supreme Court lifts 39-day X ban, Wikipedia, 2026 Brazilian general election, Al Jazeera, Flávio Bolsonaro enters the race
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