Brazil’s Centrão Tilts to Flávio After 4 October Vote
RUNOFF · BRAZIL
Runoff · Sunday, 25 October
Flávio Bolsonaro vs Lula: what happens next
First-round results, how the runoff works, the key dates and who backs whom, in one guide.
Key Facts
- —The country Brazil is Latin America’s largest economy and democracy. It picks its president in a runoff on Sunday 25 October between Senator Flávio Bolsonaro and President Luiz Inácio Lula da Silva.
- —Why it matters The Centrão, a bloc of deal-making centre-right parties, decides whether any Brazilian president can pass laws. Its biggest member, the União Brasil-PP federation, won 87 of 513 lower-house seats.
- —Why now Flávio led Sunday’s first round with 47.03% of valid votes to Lula’s 45.16%, with all ballots counted (electoral court figures, 5 October). Neutral parties are now choosing sides.
- —What happened On 5 October PP leaders said the party leans towards Flávio, O Globo reported. Mato Grosso do Sul governor Eduardo Riedel (PP) declared his support on CNN Brasil.
- —The numbers Flávio’s Liberal Party (PL) won 121 lower-house seats. With União-PP that makes 208, short of the 257 for a majority (Chamber of Deputies news agency, 5 October).
- —What it means for you Congress sets the tax, budget and trade rules US companies face in Brazil. A Flávio presidency backed by the Centrão would find bills easier to pass.
- —Still open PP and União Brasil meet on Tuesday 6 October, O Globo and CBN reported; Folha put it at 4 p.m. Brasília time (3 p.m. ET). The terms are not public.
- —Prediction markets Polymarket gives Flávio Bolsonaro an 84% chance of winning the presidency (5 October, 12:29 p.m. ET). Polymarket puts Flávio Bolsonaro’s chance of winning at 83% and Kalshi at 83% (Lula: 18% and 18%), as of 5 October, 2:20 pm ET; prices are bets, not polls.
Brazil’s Centrão parties, the deal-making centre-right bloc that decides whether any president can govern, began moving behind Flávio Bolsonaro, the conservative senator who leads the presidential race, on Monday. For US investors and Washington, it is an early signal of who could pass laws in Latin America’s largest economy.
Leaders of the Progressistas (PP), a centre-right party led by Senator Ciro Nogueira, said it leans towards Flávio, O Globo reported. It decides on Tuesday 6 October with its federation partner União Brasil, a centre-right party led by Antônio Rueda.
The runoff on 25 October pits Flávio against President Luiz Inácio Lula da Silva of the left-wing Workers’ Party (PT).
What the Centrão Is and Why It Counts
Centrão, or “big centre”, is the Brazilian name for a cluster of pragmatic parties without a fixed ideology. They tend to back whoever governs, in exchange for ministries, budget posts and influence over spending.
The União Brasil-PP federation is the largest of the Centrão parties. Federated parties must act as one in elections, so the two will announce a single position.
On Sunday the federation won 87 of the 513 lower-house seats, according to the Chamber of Deputies’ news agency. Flávio’s conservative Liberal Party (PL), led by Valdemar Costa Neto, won 121, the biggest for any party since the 1988 Constitution, CBN noted.
That is 208 seats, short of the 257 majority mark, as Brazil’s Congress: Bolsonaro’s PL Wins 121 Chamber Seats showed. Any president would still need other centre parties for most bills.
In the Senate, the PL will hold 28 of 81 seats from February, CBN and Poder360 reported. That is more than three times the PT’s nine, Poder360 said.
Who Moved on Monday
PP leaders told O Globo the party’s national executive meets on Tuesday afternoon at the Chamber of Deputies. Members of the executive said the trend is to support Flávio.
Folha de S.Paulo reported the federation meeting is set for 4 p.m. Brasília time, 3 p.m. ET, with elected deputies and senators. The likely outcome, it said, is backing Flávio while letting state branches support Lula without penalty.
PP president Ciro Nogueira kept the decision formally open. “On the 6th we will decide, respecting the majority,” he said, according to O Globo.
Nogueira lost his own Senate race in Piauí on Sunday, after Lula campaigned in the state. Folha described him as the federation leader most inclined towards Flávio.
Eduardo Riedel, re-elected governor of Mato Grosso do Sul with 67% of the vote, was more direct on CNN Brasil. “We are fully supporting this candidacy,” he said of Flávio, promising to keep doing so in the runoff.
In Bahia, União Brasil’s ACM Neto, a former Salvador mayor, lost the governor’s race to the PT incumbent and Lula ally Jerônimo Rodrigues, 43.73% to 55.80%. On Sunday night he said he would argue for Flávio at Tuesday’s meeting: “To change Bahia, we first have to change Brazil.”
The Price and the Holdouts
Support is unlikely to come free. Folha reported that União Brasil wants the PL to back the re-election of Davi Alcolumbre, the União Brasil senator who presides over the Senate, in February 2027.
Nogueira, without a seat from February, could seek a ministry in a Flávio government, allies told the newspaper. Neither condition has been confirmed by the parties.
Not all Centrão parties are moving. The Social Democratic Party (PSD), a centre-right party led by former São Paulo mayor Gilberto Kassab, declared neutrality on Sunday night, freeing members to back either candidate, O Globo and CBN reported.
The Republicanos, a conservative party led by Marcos Pereira, were still weighing their options on Monday, CBN said. The party is home to São Paulo governor Tarcísio de Freitas, who flew to Brasília on Monday to meet Flávio.
Lula’s camp is courting the same Centrão parties. Institutional Relations Minister José Guimarães said the campaign must step up its search for centre-party support, Folha reported.
Lula met campaign coordinators and allies in Brasília on Monday to reset strategy, CBN reported. His first reaction is in Brazil Runoff: Flávio Hails ‘End of PT Era’, Lula Regroups.
The history is against him: no candidate who led a Brazilian first round since 1989 has gone on to lose, Folha noted. His campaign is counting on a higher Bolsa Família cash-transfer payment from 19 October, O Globo reported.
What It Means for You
Brazil’s Congress sets the tax, budget and trade rules US companies in the country work under. A president with Centrão votes can pass them; one without struggles.
For holders of Brazilian shares and ADRs in New York, the question is less who wins than whether the winner can pass budget bills.
Jair Bolsonaro, Flávio’s father and president from 2019 to 2022, brought the Centrão into government in 2021, naming Nogueira chief of staff. Before the vote the federation expected about 115 deputies, Folha reported; it won 87, a firmer but not commanding base.
What Is Not Known
Whether the União Brasil-PP federation formally endorses Flávio on Tuesday, and on what terms, is still open. So is how many state branches, especially in Lula-leaning northeastern states, will be allowed to break ranks.
Endorsements by party leaders do not move voters automatically. All candidates other than Flávio and Lula together took about 7.8% of valid votes on Sunday, by electoral court figures.
Fresh national runoff polls are still to come. Until then, the effect of the Centrão parties’ choices on voters cannot be measured.
More: Brazil news in English, every day from The Rio Times.
What Prediction Markets Say
Polymarket bets give Flávio an 83.6% chance of winning the 25 October runoff and Lula 16.5%, as of 12:29 p.m. ET on 5 October. Flávio’s price rose about 22 points in a day after the first round.
The market has about US$172 million traded since it opened, roughly US$4.7 million of it in the last 24 hours.
Prediction markets · who wins the runoff
Implied chance of winning Brazil’s presidency on 25 October, from traders’ prices.
Polymarket
Flávio Bolsonaro 82.5% · Lula 17.5% (US$173 million traded)
Kalshi (regulated in the US by the CFTC)
Flávio Bolsonaro 83% · Lula 18%
As of 5 October, 2:20 pm ET (19:20 Lisbon), updated every 20 minutes. Prices are bets, not polls, and can move fast.
Why we show this: prediction markets turn real-money bets into a live probability that moves within minutes of the news, which is why investors, campaigns and newsrooms in the United States now follow them closely. We show them next to polls and official results, never instead of them.
Why we show this: prediction markets turn real-money bets into a live probability that moves within minutes of the news, which is why investors, campaigns and newsrooms in the United States now follow them closely. We show them next to polls and official results, never instead of them.
What is the Centrão in Brazil?
Centrão parties form a loose, mostly centre-right bloc without a fixed ideology. They usually join whichever government is in power, for ministries and budget influence. That makes them the swing vote in Congress.
When do PP and União Brasil decide whom to back?
The federation meets in Brasília on Tuesday 6 October at 4 p.m. local time, 3 p.m. ET, according to Folha de S.Paulo. Party leaders say the trend is to support Flávio Bolsonaro.
When is Brazil’s presidential runoff?
On Sunday 25 October. Flávio Bolsonaro of the Liberal Party faces President Lula of the Workers’ Party. Neither won a majority of valid votes on 4 October.
Sources: O Globo, 5 October 2026; O Globo on Nogueira; Folha de S.Paulo, 5 October 2026; CNN Brasil, 5 October 2026; Poder360, 5 October 2026; Agência Câmara, 5 October 2026; CBN, 5 October 2026; CBN on the PL benches; Folha de S.Paulo on Lula’s strategy; Polymarket prices checked 5 October, 12:29 p.m. ET.
This article was produced by The Rio Times’ automated newsroom system. How we use AI · Report an error · Editorial responsibility: Matthias Camenzind, Editor-in-Chief