Brazil Election 2026: First-Round Results & Runoff Odds
Official October 4 first-round totals, the October 25 runoff pairing, post-count market repricing, and settlement rules for Brazil's 2026 presidential election.
Published July 20, 2026 · Substantially updated October 5, 2026 — post-first-round record · Runoff: Sunday, October 25, 2026 · Next planned update: runoff-watch checks, final pre-runoff refresh the week of October 19
The answer first
Brazil's October 4 first round is decided: no ticket won outright, and the runoff on Sunday, October 25 will pair Flávio Bolsonaro (PL) against President Lula (PT). Official TSE totals give Flávio Bolsonaro 56,104,503 votes (47.03%) and Lula 53,879,538 (45.16%) — a 1.87-point lead on 78.92% turnout across 158,745,502 registered voters, with 95.23% of ballots valid. Augusto Cury (2.89%), Renan Santos (2.24%), Ronaldo Caiado (2.18%), and Romeu Zema (0.27%) led the rest of a twelve-ticket ballot. The prediction market, which had Flávio Bolsonaro at 61.95% versus Lula's 37.5% while voting was underway, repriced the eventual-winner question sharply once the count confirmed the pairing: in the October 5 snapshot the named Flávio Bolsonaro outcome trades at 84.55% (best bid about 84.5%, best ask about 84.6%) while Lula sits at 14.5% (14% bid / 15% ask). Cumulative volume has reached $172.0 million, 24-hour volume about $6.65 million — roughly 2.8 times the election-day pace — and the books for eliminated candidates have closed, leaving the two runoff candidates plus the sub-cent Alckmin legacy contract. These are timestamped market prices — not polls, endorsements, or guarantees — and a close first round does not mechanically imply a close market: the contract prices the presidency through the runoff, a different question from first-round share. The event remains open and now tracks the October 25 head-to-head.
What changed since the October 4 election-day snapshot
The first round went to a runoff
Official TSE totals put Flávio Bolsonaro at 47.03% (56,104,503 votes) vs Lula 45.16% (53,879,538): a 1.87-point lead on 78.92% turnout — short of the majority needed, so the two advance to October 25.
The board repriced after the count
The eventual-winner question moved from 61.95% / 37.5% on election day to 84.55% / 14.5% after the totals landed — the market now leans far more decisively than the vote margin.
Volume climbed, books consolidated
Cumulative volume rose from $165.7 million to $172.0 million with about $6.65 million in 24 hours — roughly 2.8 times the election-day pace — while displayed liquidity reshaped from $27.5 million to about $2.1 million around the two-way runoff.
The field resolved
Twelve tickets appeared on the official ballot; the books naming eliminated candidates closed after the count, and the Person O–Z placeholders deactivated, leaving the two runoff candidates plus the sub-cent Alckmin legacy book.
Brazil presidential election market snapshot — October 5, 2026 (after the official count)
Flávio Bolsonaro
Best bid 84.5%; best ask 84.6% at the October 5 post-count snapshot.
Snapshot, not live odds →Luiz Inácio Lula da Silva
Best bid 14%; best ask 15% at the October 5 post-count snapshot.
Snapshot, not live odds →Geraldo Alckmin — legacy book
The only other open named contract: a legacy label from early candidate speculation, now far below one cent.
Snapshot, not live odds →The outcome names now match a decided first round. The official ballot carried twelve tickets — the six well-known plus six minor — and the order books for eliminated candidates have closed; the remaining Alckmin contract is a legacy label, not a runoff candidate. TSE remains the authority for the October 25 ballot. Treat the cards above as contract labels for the eventual-winner question, not as a certified candidate list. For context on how prediction-market prices differ from polling, see our prediction markets vs. polls comparison.
August 16 → September 20 → September 27 → October 4 → October 5
Lula
−52.0 points from the August board, with the post-count repricing erasing the election-day level. Bid/ask 14 / 15 on October 5.
Flávio Bolsonaro
+55.9 points; leader since mid-September and a wide post-count favorite. Bid/ask 84.5 / 84.6 on October 5.
Eliminated field
Cury, Renan Santos, and Caiado led the eliminated tickets on October 4; their books closed after the count.
Market size
Liquidity $10.6M → $18.8M → $21.3M → $27.5M → $2.1M (books consolidated post-vote); active outcomes 17 → 19 → 19 → 19 → 3.
Official first-round results — October 4, 2026
Turnout
125,275,835 total ballots from 158,745,502 registered voters; 119,300,788 valid (95.23%), 3,674,249 invalid, 2,300,798 blank.
The margin
56,104,503 votes for Flávio Bolsonaro vs 53,879,538 for Lula — 2,224,965 votes apart, far short of the outright majority each needed.
What it decides
With no ticket above half of valid votes, the top two advance to the October 25 second round; the winner there takes the presidency.
| Ticket | Party | Votes | Share |
|---|---|---|---|
| Flávio Bolsonaro / Alfredo Gaspar | PL | 56,104,503 | 47.03% |
| Lula / Geraldo Alckmin | PT | 53,879,538 | 45.16% |
| Augusto Cury / Júlio Delgado | Avante | 3,448,569 | 2.89% |
| Renan Santos / Aroldo Medina | Missão | 2,675,887 | 2.24% |
| Ronaldo Caiado / Gilberto Kassab | PSD | 2,605,148 | 2.18% |
| Romeu Zema / Eduardo Girão | NOVO | 326,488 | 0.27% |
| Samara Martins / Raquel Brício | Popular Unity | 122,911 | 0.10% |
| Hertz Dias / Vanessa Portugal | POUS | 43,103 | 0.04% |
| Clariana Barão / Fabiana Torquato | Christian Democracy | 40,043 | 0.03% |
| Edmilson Costa / Cleusa Santos | PCB | 22,693 | 0.02% |
| Wilson Grassi / Suêd Haidar | Democrata | 16,881 | 0.01% |
| Rui Costa Pimenta / Antônio Carlos | PCO | 15,024 | 0.01% |
Source: Tribunal Superior Eleitoral official totals (election 6257), recorded October 5, 2026 from the TSE results portal and cross-checked against independent election-night reporting; shares are of valid votes.
Brazil election 2026 timeline
Official TSE totals confirmed the runoff: Flávio Bolsonaro 56,104,503 votes (47.03%) vs Lula 53,879,538 (45.16%) on 78.92% turnout — no majority, so both advance to October 25. The market repriced the eventual-winner question to 84.55% / 14.5% as cumulative volume crossed $172.0 million and the eliminated candidates' books closed.
Vote-day snapshot with polling underway: Flávio Bolsonaro extended to 61.95% vs Lula 37.5%, cumulative volume crossed $165.7 million, and 24-hour volume reached about $2.4 million — roughly nine times the September 27 pace. No official results had been released at the snapshot time; the post-vote record follows once TSE totals land.
T-7 final pre-vote recheck: the lead held — Flávio Bolsonaro 57.25% vs Lula 42.5% — cumulative volume crossed $155.7 million, and the registered six-ticket field and resolution rules were re-verified as unchanged. No trigger fired: no withdrawal, no TSE ballot ruling, and no 10-point move since September 20.
The market lead flipped to Flávio Bolsonaro (57.75%) over Lula (41.5%) — a reversal of the August 16 board — with cumulative volume at $151.9 million and liquidity at $18.8 million.
Registration has closed and campaigning has begun. The market's 24-hour volume reached roughly $1.0 million, cumulative volume $124.2 million, and the named-outcome field stayed at 17 active contracts.
The TSE deadline for parties, federations, and coalitions to request candidate registration passed as scheduled. Post-deadline reporting tracks six presidential tickets; TSE registration rulings finalize the official ballot.
Electoral campaign activity, including internet advertising under the calendar's rules, is permitted from this date. Expect polling, news volume, and market activity to build toward October 4.
Runoff-period checks: a final pre-runoff refresh in the week before October 25, a runoff-day update once TSE totals land, and a settlement-confirmation review after resolution. A TSE ruling, candidate withdrawal, a ≥10-point board move, or a resolution-rule change still triggers an immediate recheck.
Voting determines whether one presidential ticket wins outright or the contest proceeds to a runoff. If no ticket reaches the required majority, the top two advance.
If required, the two leading tickets face a runoff. The Polymarket event explicitly includes a potential second round, so October 4 is not always the final outcome date.
Market settlement follows the event's written resolution process. Reporting calls can precede official totals, while a dispute or ambiguity can extend the wait.
How Brazil's presidential vote reaches a winner
Brazil elects its president on a national ticket. The October 4 first round awarded no ticket the required majority of valid votes, so the two leading tickets — Flávio Bolsonaro/Alfredo Gaspar (PL) and Lula/Geraldo Alckmin (PT) — advance to the October 25 second round, where the most-voted ticket wins. This two-stage structure matters for prediction markets: a first-round lead is not automatically a winning outcome, and alliances or endorsements between rounds can change both polls and market prices.
The market is also different from a poll. A poll estimates voter preference from a defined sample at a particular time. A market price is the marginal price of a contract with specific settlement language. It can incorporate polling, candidate eligibility, coalition strategy, expected runoff matchups, liquidity, and traders' differing assumptions. Our prediction markets vs. polls comparison explains why the two signals can diverge without either one being automatically wrong. For general background on how these markets work, see our guide to how prediction markets work.
What the Polymarket resolution rules mean
The event asks who will win Brazil's 2026 presidential election and says it includes any potential second round. It resolves to the listed winner based on a consensus of credible reporting. If reporting is ambiguous, the event description points to official information from Brazil's Superior Electoral Court. If the result remains unknown by the market's June 30, 2027 fallback deadline, the event resolves to Other. The Gamma record listed an event end timestamp of October 5, 03:59 UTC; that timestamp has now passed with the event still open — confirming in practice that the field does not override the written resolution process, which now runs through the runoff.
First round is not settlement
If no ticket wins outright on October 4, the market remains about the eventual presidential winner through the October 25 runoff.
Rules outrank the headline
An event end date, social-media call, or a price near 100% does not override the written resolution source and fallback procedure.
"Other" has two roles
It can represent an unlisted winner, and the rules also use it as the long-stop result if the winner is still unknown at the stated 2027 deadline.
The ballot is now official
Twelve tickets appeared on the October 4 ballot. After the count, the books naming eliminated candidates closed; the two runoff candidates and the sub-cent Alckmin legacy contract remain open through the runoff question.
Before relying on any displayed number, open the live event and read the current description. Market operators can clarify language or add outcomes as the field develops. A durable research note should save the wording, price, spread, and UTC timestamp together. For a systematic framework, review our prediction-market research strategies and the prediction-market odds guide for interpreting bid-ask spreads and implied probabilities.
Research checklist for the runoff
1. Confirm official status
Use the TSE calendar and candidate data rather than treating a news report or market label as the final ballot.
2. Separate rounds
Ask whether a poll or forecast measures first-round vote share, a specific runoff matchup, or the eventual winner. Those are different questions.
3. Check the spread
The last price alone can be stale. Compare the best bid, best ask, depth, and recent volume using the prediction-market odds guide.
4. Timestamp comparisons
Match each market observation to polling field dates and official milestones. Do not compare a current contract with an old poll as though they were simultaneous.
5. Read every fallback
Record what counts as a win, whether a runoff is included, which source settles ambiguity, and what happens if the result is delayed.
6. Investigate moves
The biggest movers watchlist can identify a change, but the next step is finding the dated source and checking market quality—not inventing a catalyst.
Where this guide fits
This page owns the dated search intent for Brazil's 2026 presidential election: the official calendar, market snapshot, runoff mechanics, and settlement rules. For general concepts, use the political prediction markets guide, and for how election odds are quoted and move, the election betting odds guide. For another fixed 2026 election calendar, see the U.S. midterm election odds hub and the dedicated California governor election 2026 guide for the same November 3 U.S. voting date. Russia's State Duma voting was held September 18–20, 2026 — see the Russia Duma election 2026 odds guide for that settled calendar. For macro events that may overlap with the Brazilian campaign cycle, see the September Fed meeting hub. Keeping those intents separate reduces the risk of confusing a country-specific event page with a general education article.
Frequently asked questions
When is the 2026 Brazil presidential election?
The first round was held on Sunday, October 4, 2026. Because no ticket won the required majority of valid votes, the two leading candidates advance to the runoff on Sunday, October 25, 2026.
What was the result of the October 4 first round?
Official TSE totals: Flávio Bolsonaro (PL) won 56,104,503 votes (47.03%) and Lula (PT) 53,879,538 (45.16%), with Augusto Cury at 2.89%, Renan Santos at 2.24%, Ronaldo Caiado at 2.18%, and Romeu Zema at 0.27% ahead of six minor tickets. Turnout was 78.92% of 158,745,502 registered voters and 95.23% of ballots were valid. The 1.87-point lead left both leaders short of a majority, sending the race to the October 25 runoff.
Who are the candidates in Brazil's 2026 presidential election?
The official ballot carried twelve presidential tickets. The six best-known: Lula/Alckmin (PT), Flávio Bolsonaro/Alfredo Gaspar (PL), Ronaldo Caiado/Gilberto Kassab (PSD), Romeu Zema/Eduardo Girão (NOVO), Renan Santos/Aroldo Medina (Missão), and Augusto Cury/Júlio Delgado (Avante), plus minor tickets led by Samara Martins, Hertz Dias, Clariana Barão, Edmilson Costa, Wilson Grassi, and Rui Costa Pimenta. The runoff pairs Flávio Bolsonaro and Lula.
Who is favored in the Brazil election prediction market?
In the October 5 post-count snapshot, the named Flávio Bolsonaro outcome traded at 84.55% (best bid 84.5%, best ask 84.6%) with Lula at 14.5% (14% bid / 15% ask) — a sharp move from the election-day board of 61.95% versus 37.5% once the official totals confirmed the runoff pairing. These prices change, and the board prices the eventual winner through the runoff, not the first-round margin.
Why is the market lead so wide after such a close vote?
The contract asks who wins the presidency after any potential second round, not who led the first round. First-round vote share and the eventual-winner question are different objects: after October 4 the market prices the October 25 head-to-head, and traders' runoff expectations can diverge sharply from a 1.87-point first-round margin. The same distinction ran the other way in August, when a wide Lula board narrowed into a close race by election day.
How much volume does the Brazil election market have?
As of October 5, 2026, after the official count, the Polymarket event reported about $172.0 million in cumulative volume, roughly $6.65 million in 24-hour volume (about 2.8 times the election-day pace), and about $2.1 million in displayed liquidity as books consolidated around the runoff pairing — up from $165.7 million cumulative at the election-day snapshot.
Does the Polymarket event include a runoff?
Yes. The event description says the market includes any potential second round, so the October 4 count did not settle it. The event remains open through the October 25 runoff, and its listed end timestamp (October 5, 03:59 UTC) is a technical field that does not override the written resolution process.
How does the Brazil presidential election market resolve?
The event resolves to the winner of the 2026 Brazilian presidential election. Its rules use a consensus of credible reporting and point to official TSE results if reporting is ambiguous, with an Other fallback if the result remains unknown by the stated 2027 deadline.
When will this guide be refreshed?
A post-vote record shipped October 5, 2026, after the official first-round count. Next: runoff-watch checks through October 25 — a final pre-runoff refresh in the week before the vote, a runoff-day update once TSE totals land, and a settlement-confirmation review after resolution. A TSE ruling, candidate withdrawal, a ≥10-point board move, or a resolution-rule change triggers an immediate recheck.
Related analysis on the blog
- Lula Slips Below Even Money While a 0.1% Book Trades $1.6M: Prediction Market Odds for September 11 — September 11, 2026
📈 Every live Polymarket market on the topic: Brazil odds · World Elections odds
Sources and methodology
- Tribunal Superior Eleitoral: 2026 election calendar — official convention, registration, campaign, first-round, and second-round dates.
- TSE open data portal — official candidate and election datasets to use after registrations are published.
- TSE official results portal — official first-round totals for the October 4, 2026 vote (in Portuguese; election 6257). The count recorded on this page — 56,104,503 (47.03%) for Flávio Bolsonaro, 53,879,538 (45.16%) for Lula, turnout 78.92% — matches the portal's national totals as re-checked October 5, 2026.
- Wikipedia: 2026 Brazilian general election — tracking of the six registered presidential tickets, parties, and running mates (citing TSE filings); twelve-ticket official ballot and TSE-sourced first-round results table re-checked October 5, 2026 after the count; runoff confirmed for October 25.
- Polymarket Gamma event record: Brazil Presidential Election — outcome labels, prices, volume, liquidity, status, and event description fetched October 5, 2026 at approximately 14:09 UTC after the official first-round count (prior snapshots August 10, August 16, September 20, September 27, and October 4, 2026 preserved in the historical sections).
Prices and market totals are rounded from the timestamped API response. They are preserved here as a historical snapshot and are not presented as live data.