The Brazil 2026 first round market prices which candidate takes the most votes on October 4, 2026, and the field is now locked: registration closed on August 16, 2026. Eight names trade across roughly $272K in cumulative volume, with President Lula's fourth-term bid set against a right wing that never landed on a single challenger. The live board above carries current prices for every candidate; the runoff, if needed, follows on October 25, 2026.
Brazil votes on October 4, 2026, the candidate field locked when registration closed on August 16, and the first-round market has not moved off its read: President Luiz Inacio Lula da Silva takes the most round-one votes. Lula formalized his fourth-term bid at the Workers' Party convention in Sao Paulo on August 2, 2026, with Geraldo Alckmin again on the ticket. Senator Flavio Bolsonaro was confirmed as the Liberal Party candidate on July 25, 2026, at Pacaembu in Sao Paulo, with federal deputy Alfredo Gaspar of Alagoas as his running mate. Eight candidates trade on this board across roughly $272K in cumulative volume. The live board above carries the current price on every name.
Every credible first-round poll since Lula announced in October 2025 has him leading. The most recent Quaest survey, 2,004 respondents fielded August 10 to 13, 2026 for Globo, put him at 38% against 31% for Flavio Bolsonaro, with Renan Santos and Ronaldo Caiado at 4% each and Romeu Zema at 2%.
The structure of the contest does the rest of the work. This market pays on finishing first, not on clearing 50%, and a four-decade political brand polling near 40% against a right wing that splits five ways is a strong plurality position even with roughly half the country disapproving of the government.
The gap between round one and the presidency is the whole story right now. The same Quaest poll ran a runoff scenario and found Lula at 43% and Flavio Bolsonaro at 40%, inside the two-point margin of error. Quaest's August 5 read had that spread at five points, 44% to 39%. So the runoff tightened to a statistical tie over roughly a week while the first-round board firmed. Both readings hold at once: Lula is heavy chalk to lead on October 4 and close to a coin flip to still hold the office after October 25.
Flavio Bolsonaro, the senator from Rio de Janeiro and son of former president Jair Bolsonaro, declared in December 2025 and inherited the family's electoral machine. His father is serving a 27-year sentence for the 2022 coup plot and was moved to prison custody in January 2026, so the endorsement travels without the endorser. Sao Paulo governor Tarcisio de Freitas, long viewed as the right's strongest presidential option, chose a gubernatorial re-election run in January 2026 and backed Flavio instead. Flavio has held polling in the high 20s to low 30s since. That is a runoff number and a losing number for first place, which is exactly how the board treats him.
His registration nearly became the story of the month. On August 13, 2026, two days before the filing deadline, a Superior Electoral Court certificate listed Flavio as affiliated with the Missao party since August 12, recording a departure from the Liberal Party he never made. The court attributed the change to improper use of the filing tool by someone holding access credentials rather than a breach, and the affiliation was reversed within hours. An earlier unauthorized edit had listed Lula as a Liberal Party member. Registration closed on August 16, 2026, and campaigning opened the same weekend.
The rest of the field trades at long-shot levels. Renan Santos, co-founder of the Free Brazil Movement and the Missao party's first presidential candidate, polls near 4% nationally and several times that with voters aged 16 to 24, the one split on the board that does not match his price. Romeu Zema and Ronaldo Caiado, the center-right governors of Minas Gerais and Goias, sit in the low single digits. Fernando Haddad, Lula's finance minister, is the understudy contract if the president exits the race late. Tarcisio stays listed even though his gubernatorial run legally bars him from the presidential ballot, and the Polymarket side of the board also carries Parana's Ratinho Junior.
The market resolves on the first round of Brazil's presidential election, October 4, 2026, to the candidate who receives the most valid votes, per official results from the Superior Electoral Court (TSE). Winning round one and winning the presidency are different bets. A candidate takes the office outright only with more than 50% of valid votes; otherwise the top two advance to an October 25, 2026 runoff, which current polling makes the strong base case. This board settles either way once the round-one count is official.
The first round is one leg of a larger Brazil 2026 complex. The Brazil first round qualification odds price each candidate's chance of reaching the October 25 runoff rather than leading it, and at roughly $490K that board is the deeper of the two; it is also the cleaner expression of a Flavio Bolsonaro view than backing him for first place. Elsewhere in the region, Venezuela Leadership 2026 odds carry roughly $101M in cumulative volume. At the longer-dated end of the calendar, the 2028 US Presidential Election market trades across roughly $747M. For the wider slate, browse politics prediction markets.
Resolves to the candidate who receives the most votes in the first round of Brazil's presidential election on October 4, 2026, based on official results from Brazil's Superior Electoral Court (TSE). Candidate registration closed on August 16, 2026, so the ballot is set. Each candidate contract pays $1 per share if that candidate finishes first in the round-one count; all other contracts resolve to $0. Winning the first round does not require a majority and does not by itself decide the presidency: if no candidate clears 50% of valid votes, the top two finishers advance to a runoff on October 25, 2026. If a listed candidate withdraws or is barred before the vote, that candidate's contract resolves No per platform rules.
As of August 17, 2026, Kalshi prices Luiz Inacio Lula da Silva at 86c to take the most first-round votes, with Flavio Bolsonaro next at 13c. Renan Santos is the only other name above 2c, trading 5c on Kalshi and 1c on Polymarket.
On the first-round vote, October 4, 2026, using official results from Brazil’s Superior Electoral Court. A runoff between the top two follows on October 25, 2026 if no one wins a majority of valid votes.
Kalshi lists a seven-candidate first-round ladder under its KXBRPRES1R series, and Polymarket carries individual first-round contracts for Renan Santos, Tarcisio de Freitas, and Ratinho Junior. The combined board runs roughly $272K in cumulative volume across the two platforms.
No. A candidate only wins the presidency in round one by taking more than 50% of valid votes. Quaest polling from August 10 to 13, 2026 had a runoff at Lula 43% to Flavio Bolsonaro 40%, so the October 25 second round is the base case even though this board pays on October 4 alone.
The free-airtime blocks and September debates that started once campaigning opened on August 16, 2026, and the monthly Quaest and Datafolha runoff reads, which narrowed from a five-point Lula lead on August 5 to three points on August 13.