Brazil just delivered one of the biggest election surprises in its democratic history. In the first round of the 2026 presidential election on October 4, right-wing senator Flávio Bolsonaro — the son of jailed former president Jair Bolsonaro — won about 47 percent of the vote, edging out incumbent President Luiz Inácio Lula da Silva, who took roughly 45 percent. Polls had shown Lula leading. Now Brazil heads to a runoff on October 25, 2026, and the entire world is watching.

This is far more than a domestic contest. Brazil is Latin America's largest economy and a major global player in agriculture, energy, and climate politics. A changing of the guard in Brasília would ripple across trade, diplomacy, and the fight over the Amazon. Here's what happened, who the candidates are, and what to expect in the Brazil 2026 election runoff.

Result — 25 October 2026: Lula won the runoff. With 99.99 percent of votes counted, Brazil's Superior Electoral Court (TSE) put Lula at 51.79 percent of valid votes to 48.21 percent for Flávio Bolsonaro — a margin of more than 4.3 million votes — securing Lula a historic fourth term. Flávio Bolsonaro refused to concede and initially said he would seek an annulment of the election. On 26 October he dropped the annulment bid, his Liberal Party acknowledged the result, and he instead pursued a case seeking disqualification of Lula's ticket over alleged abuse of power. He later travelled to the United States, landing in Miami.

Update — 23 October 2026: A Statistical Tie Ahead of Sunday's Vote

With voting day almost here, the runoff has become a statistical tie. A Datafolha poll conducted October 20–22 and reported by Reuters on October 22 puts Flávio Bolsonaro on 47 percent and President Lula on 46 percent, with 5 percent of voters saying they would cast a blank ballot and 2 percent undecided — a gap well inside the poll's margin of error of plus or minus 2 percentage points. A Quaest poll conducted October 17–20, also reported by Reuters, shows a near-identical picture: Bolsonaro 45 percent, Lula 44 percent, again a technical tie. A week earlier, the same Quaest survey had Bolsonaro ahead 46 to 44, so if anything the race has tightened slightly as election day approaches.

Voting takes place on Sunday, October 25, 2026, with polls open from 8 a.m. to 5 p.m. Brasília time nationwide. Because Brazil votes electronically, results are typically known within hours of polls closing on Sunday night. The winner will take office on January 1, 2027. After a first round in which Flávio Bolsonaro surprised observers by finishing first, the final readings from two of Brazil's most established pollsters say the same thing: this election is too close to call.

What Happened in the First Round

Brazil elects its president in a two-round system: if no candidate wins more than 50 percent in the first round, the top two face off in a runoff three weeks later. On October 4, 2026, neither Flávio Bolsonaro nor Lula cleared that bar, so the runoff was triggered automatically.

The result stunned observers. Pre-election polling had consistently shown Lula ahead, yet Flávio Bolsonaro finished first with around 47 percent to Lula's 45 percent. The right also performed strongly in congressional races, suggesting the result reflects a broader shift rather than a quirk of the presidential contest. Turnout told its own story: abstention hit a record 21 percent, meaning more than one in five eligible voters stayed home — a sign of disaffection that both campaigns will now try to convert.

Who Is Flávio Bolsonaro?

Until recently, Flávio Bolsonaro was a little-known senator. He is the eldest son of Jair Bolsonaro, the far-right former president now serving a 27-year prison sentence for his role in the attempted coup following the 2022 election. When it became clear the elder Bolsonaro could not run again, he anointed Flávio as his political heir — and the bet appears to have paid off spectacularly.

Flávio has campaigned as the standard-bearer of his father's movement: tough on crime, socially conservative, skeptical of the political establishment, and friendly to agribusiness and gun ownership. Critics argue he lacks his father's charisma and national profile; supporters counter that the Bolsonaro brand — and anger at the status quo — is doing the heavy lifting. His first-round performance suggests the movement is bigger than one man.

Who Is Lula da Silva?

Luiz Inácio Lula da Silva is one of the most famous politicians in Brazilian history. A former metalworker and union leader, he served two terms as president from 2003 to 2010, a period remembered for lifting millions out of poverty through social programs. After a corruption conviction that was later annulled, he returned to win the presidency again in 2022, defeating Jair Bolsonaro.

Now around 80 years old and seeking a fourth term, Lula is campaigning on his record: social spending, workers' rights, environmental protection, and Brazil's international standing. But age has become a talking point, the economy has underwhelmed parts of the electorate, and the first-round result suggests his coalition is leaking support — particularly among younger voters and in regions that once formed his base.

Why the Polls Got It Wrong

The polling miss is now a major story in itself. Several explanations are circulating. Pollsters may have underestimated right-wing turnout or failed to capture late-deciding voters. The record 21 percent abstention rate complicates every model — when a fifth of the electorate doesn't show up, small errors in predicting who votes become large errors in the result. Some analysts also point to a "shy voter" effect, where respondents are reluctant to tell pollsters they support a controversial candidate.

Whatever the cause, the miss matters beyond Brazil: it will fuel debates about polling methodology worldwide, much as previous surprises did in the United States and the United Kingdom.

What to Expect in the Runoff

Three weeks is a short campaign, and both sides know exactly what they must do.

Flávio Bolsonaro's path

He needs to hold his first-round voters and pick up supporters of eliminated candidates, while convincing Brazilians that a 40-something senator can govern. Expect him to lean hard on the Bolsonaro brand, attack Lula's age and economic record, and promise a break from the establishment. His biggest risk: that voters who backed him as a protest in round one get cold feet about actually handing him the presidency.

Lula's path

The incumbent must do two things at once: energize his base and win back defectors. That likely means sharper attacks on the Bolsonaro legacy — including the coup attempt that put Jair Bolsonaro in prison — plus concrete economic promises aimed at the squeezed middle class. His challenge is to make the runoff a referendum on the far right rather than on his own record.

The abstention factor

With 21 percent staying home in round one, the campaign that better mobilizes non-voters could win. Runoffs often see different turnout dynamics than first rounds, and in a race this close — a two-point gap — even a small shift in who shows up can decide it.

Why It Matters Globally

Brazil's choice will echo far beyond its borders:

  • Trade and economy. Brazil is a top exporter of soy, beef, coffee, iron ore, and oil. A new government's trade and industrial policies would affect global commodity markets and partners from China to the European Union.
  • The Amazon and climate. The rainforest's fate is a global concern, and Brasília's environmental enforcement has swung dramatically between administrations. International climate diplomacy watches Brazilian elections closely.
  • Democracy's stress test. Jair Bolsonaro's 2022 coup attempt ended with a 27-year sentence — Brazilian institutions held. But a Bolsonaro restoration at the ballot box, led by his son, would test whether those institutions' verdict commands lasting public acceptance. For more on how democratic systems handle such moments, see our guide to how democracy works.
  • Regional politics. A right-wing win in Brazil would reshape Latin America's ideological map and its blocs, from Mercosur to relations with Venezuela and Argentina.

How Brazil's Runoff System Works

Brazil uses electronic voting machines nationwide, and results are typically known within hours — a system that has delivered fast, auditable counts for decades. In the runoff, the candidate with the most valid votes wins; there is no minimum threshold. Voting is compulsory for literate citizens aged 18 to 70, though the record abstention rate shows compulsion has limits when disaffection runs high. To understand the mechanics of runoff elections more generally, see our explainer on how voting and elections work.

What to Watch Before October 25

  • Debates. Head-to-head debates in the final two weeks could be decisive — Lula's experience versus Flávio's energy.
  • Endorsements. Where the supporters of eliminated first-round candidates go will signal which way the wind is blowing.
  • New polls — with caution. Pollsters will adjust their methods after the first-round miss, but treat every new number skeptically.
  • The courts and the military. After 2022, every Brazilian election is watched for institutional stress. So far, the process has held.

Conclusion

The Brazil 2026 runoff is a genuine coin flip with global stakes: a historic incumbent fighting for a fourth term against the heir of the man he defeated — and who is now in prison for trying to overturn that defeat. The polls were wrong once; nobody should assume they are right now. On October 25, Brazilians will decide not just who governs them, but what their democracy's turbulent recent history ultimately meant. The world should pay attention. The campaign has since reached the debate stage, with Lula and Flávio Bolsonaro meeting in their first head-to-head runoff debate.

Note: This article was first published before the runoff and updated with the result. The runoff took place on October 25, 2026.

Result: Lula won the runoff with 51.79 percent of valid votes to Flávio Bolsonaro's 48.21 percent, according to the Superior Electoral Court's final count.