Brazil holds the first round of its 2026 general election on October 4, with a presidential runoff scheduled for October 25 if no candidate wins an absolute majority of valid votes. Voters will also choose governors, senators and federal, state and district legislators.
The system can look complicated to international readers because several offices are decided on the same day, different electoral formulas apply and blank or invalid ballots do not count toward the presidential majority.
Brazil election 2026 key dates
- First round: October 4, 2026
- Possible second round: October 25, 2026
- Voting hours: 8:00 a.m. to 5:00 p.m. Brasília time nationwide
- Presidential inauguration: January 5, 2027
- Governor inaugurations: January 6, 2027
The country's Superior Electoral Court, known by its Portuguese initials TSE, sets the national calendar and oversees election administration. Official results and voter guidance should be checked through TSE channels rather than social-media screenshots.
How a candidate wins the presidency
A presidential candidate wins in the first round by receiving more than 50% of the valid votes. Valid votes exclude blank and null ballots.
If nobody crosses that threshold, the two candidates with the highest totals advance to a second round. The candidate with more valid votes in the runoff is elected president.
This design encourages coalitions between rounds. Parties and candidates eliminated in the first vote may endorse one finalist, remain neutral or negotiate support around policy and cabinet priorities.
The same two-round principle applies to governors where required. Senate and legislative contests follow different rules, so a runoff for president does not mean every race returns to the ballot on October 25.
What else are Brazilians electing?
The 2026 ballot covers several levels of government:
- President and vice president
- State governors and vice governors
- Members of the Federal Senate
- Members of the Chamber of Deputies
- State and district legislators
Presidential and gubernatorial contests use the majority system. Seats in the Chamber of Deputies and state legislatures use proportional rules that take party and federation performance into account, not only the personal total of an individual candidate.
Senate races use a majority method. Because the offices follow different systems, a party can perform strongly in the presidential contest without winning a matching share of legislative seats.
Is voting compulsory in Brazil?
Voting is compulsory for most literate citizens aged 18 to 70. It is optional for people aged 16 or 17, those older than 70 and people who cannot read or write.
Voters who are required to participate but cannot attend must justify their absence under the electoral rules. The process and deadlines vary depending on whether the voter is inside Brazil or abroad, so affected citizens should use official TSE guidance.
Brazil uses electronic voting machines at polling locations. Authorities conduct preparation, testing and result-totalisation procedures under electoral law, while parties and authorised observers can monitor defined stages of the process.
Why the runoff can change the campaign
First-round campaigns speak to a broad field of candidates and parties. A runoff narrows the choice to two tickets, changing television time, endorsements and voter strategy.
Supporters of eliminated candidates become crucial. Some voters choose the finalist closest to their original preference; others abstain or cast a blank or null ballot. Because those invalid ballots are excluded from the majority calculation, a candidate does not need more than half of every ballot placed in a machine—only more than half of valid votes.
The month between September and the first round is therefore a key search period. Candidate debates, coalition announcements and polling receive intense attention, but individual polls should be read with their field dates, sample and margin of error.
When will Brazil election results be known?
Electronic voting allows preliminary totals to emerge relatively quickly after polls close, but international audiences should wait for official TSE reporting. Time-zone differences and outstanding votes can affect when a contest is formally called.
If a runoff is required, the first-round result determines only which two presidential tickets continue. It is not a final forecast: alliances, turnout and voter priorities can shift before October 25.
The TSE election calendar confirms the dates, while its explanation of majority and proportional systems describes how offices are filled.
Readers comparing elections can use our US midterm elections guide and Sweden election 2026 guide. More election explainers are available in the Politics section.
