The result is in, and it was a surprise. Senator Flavio Bolsonaro finished first in Brazil's October 4 first-round presidential vote with about 47% to President Lula's roughly 45%, according to the electoral court. Because neither cleared the 50% needed to win outright, the two now meet in a runoff on October 25. Right up to the weekend, the polls had Lula narrowly ahead, so Flavio topping the first round caught many off guard. Here is what happened and what it means for Brazilian assets.
The Result
With nearly all sections counted, Brazil's Superior Electoral Court put Flavio Bolsonaro at about 47% of valid votes and Lula at about 45%, a tight margin that sends both to a second round. Abstention came in around 21%, the highest in a first round since 1998. No presidential candidate won outright, exactly the runoff outcome that has followed every Brazilian election since 2002, which we explained in our runoff guide.
The Polls Missed It, the Betting Markets Did Not
This is the story within the story. The final opinion polls had Lula leading the first round. The prediction markets did not. On Polymarket, traders had flipped to favor Flavio in the days before the vote, giving him well over a 60% chance of winning the presidency, as we covered in the money says Flavio. The first-round result vindicated the betting crowd and put a dent in the polls, a reminder of how hard Brazil's polarized electorate is to measure.
What It Means for Markets
Investors have treated a strong showing for the market-friendly opposition as the bullish scenario for Brazil, tied to hopes of fiscal austerity, privatization and lighter state intervention, the two paths we laid out in Wall Street's two scenarios. Flavio leading the first round is the outcome that camp was hoping for, and Brazilian assets went into the vote near highs, with the Ibovespa around 192,000 and the real near R$5.21 per dollar. The catch: this is only halftime. With a tight runoff three weeks away, the market-friendly result is not sealed, and the next three weeks are likely to stay volatile as the two sides fight for the voters whose candidates were eliminated.
What Happens Next
The October 25 runoff is a straight head-to-head, won by a simple majority. The key variable is where the eliminated candidates' votes go, and both camps will spend three weeks chasing them. For US investors, the event continues to play out through the iShares MSCI Brazil ETF (EWZ) and ADRs like Petrobras (PBR), Vale (VALE) and Itau (ITUB), plus the B3 names on our Brazilian stocks hub.
Frequently Asked Questions
Who won the first round of Brazil's 2026 election?
Flavio Bolsonaro finished first with about 47% of valid votes, ahead of Lula's roughly 45%. Because neither reached 50%, the two advance to a runoff on October 25.
Why was the result a surprise?
The final opinion polls had Lula narrowly leading the first round, but Flavio outperformed them and came in first. Prediction markets like Polymarket had already flipped to favor him.
When is the Brazil runoff?
October 25, 2026. It is a head-to-head second round between Flavio Bolsonaro and Lula, decided by a simple majority.
The Bottom Line
Brazil's first round delivered a surprise: Flavio Bolsonaro on top, Lula close behind, and a runoff on October 25 to settle it. For markets, a market-friendly candidate leading is the outcome investors were positioned for, but with a razor-thin margin and three weeks to go, nothing is decided. Expect the real and the Ibovespa to swing with every poll and endorsement until the second round, and watch where the eliminated candidates' voters land, because that is what will decide the presidency.
This article is for informational purposes only and is not financial advice. Figures are based on official counts and public reporting as the results came in. Always do your own research before investing. Further reading: Brazilwood, Gold, and Graft: 500 Years of Wealth Leaving Brazil, by the Numbers.
