Nearly 160 million Brazilians are casting ballots on Sunday, October 4, in the first round of the 2026 presidential election, a vote that will shape Latin America’s largest country and reverberate in Washington. On Brazil election voting day 2026, voters are using the country’s electronic voting machines — in use since the 1990s — to choose a president, with first-round results expected Sunday evening.
President Luiz Inácio Lula da Silva is seeking to defend his presidency against Senator Flávio Bolsonaro, the eldest son of former president Jair Bolsonaro. If no candidate wins more than 50 percent of valid votes — which exclude blank and null ballots — the two frontrunners will advance to a second-round runoff on October 25, Reuters reported.
Brazil election voting day 2026: how the vote works
Brazil holds its elections on a single Sunday, and today’s ballot covers far more than the presidency. Voters are choosing 27 governors, all 513 members of the Chamber of Deputies, and 54 senators in the same day’s voting, according to election coverage reviewed for this article.
The electronic voting machines, adopted in the 1990s, are a fixture of Brazilian democracy. Because the machines tally votes quickly, partial and final results typically begin arriving within hours of the polls closing — meaning Brazilians are expected to know the night’s outcome before midnight local time.
The crucial number is 50 percent. Under Brazil’s electoral rules, a candidate who exceeds half of all valid votes wins outright in the first round. Anything less sends the top two finishers into a three-week runoff campaign ending October 25. Recent polling points to a likely runoff, with Lula leading narrowly but neither candidate above 50 percent, according to Reuters and MercoPress.
Saturday’s dueling rallies: 150,000 on Augusta Street, a motorcycle caravan for Flávio
Both candidates closed their campaigns on Saturday with large events. Lula marched through São Paulo, where organizers said some 150,000 supporters filled a two-kilometer stretch of Augusta Street — a figure that comes from the campaign’s own organizers and has not been independently verified. At the rally, Lula framed the election as a choice between “democracy and barbarism,” Reuters reported.
Flávio Bolsonaro, meanwhile, rode a motorcycle caravan through cities in São Paulo state and rallied supporters in Rio de Janeiro, predicting a first-round victory. “I am convinced that everything is in place for us to win this election in the first round,” he said, according to Reuters. He was photographed holding a placard bearing the image of his father, former President Jair Bolsonaro, who is under house arrest after being convicted of attempting to overturn the 2022 election result.
The Trump factor and what’s at stake
The contest carries outsized importance for Washington. The Bolsonaro family are allies of President Donald Trump, and Lula has accused the US president of trying to swing the vote through economic and diplomatic pressure — a charge that has made the election a diplomatic flashpoint as well as a domestic contest.
The accusation gained traction in the campaign’s final days when the United States and Australia suspended diplomatic operations in Brazil, citing unspecified security concerns around US diplomatic facilities. The Workers’ Party president, Edinho Silva, called the suspensions “unprecedented” and suggested Trump was attempting to influence Brazilian public opinion — a claim that has not been corroborated by any official finding, but which turned the final stretch of the campaign into a proxy fight over American influence.
Readers can catch up on the pre-election maneuvering — the neck-and-neck polling and the US embassy suspensions two days before the vote — in our October 3 report on the race’s final stretch.
More than the presidency: governors, deputies, senators
While the presidential race commands the headlines, Sunday’s ballot will also reshape Brazil’s political map from the ground up. All 27 governorships are up for grabs, along with every seat in the 513-member Chamber of Deputies and 54 of the 81 Senate seats. The results will determine not just who governs Brazil, but who holds power in its states and who the next president must bargain with in Congress.
Brazil’s recent history shows how quickly fortunes can change. Today’s election is the first presidential contest since the 2022 election, whose disputed aftermath — and the coup-attempt conviction of Jair Bolsonaro that followed — has cast a long shadow over this campaign.
Brazil election voting day 2026: what happens tonight
As polls close across Brazil’s time zones, the Superior Electoral Court (TSE) will begin releasing tallies. The key questions: does either candidate clear 50 percent of valid votes — and if not, how wide is the gap between the top two heading into the October 25 runoff?
With polling showing Lula with a narrow lead but neither contender above the outright-win threshold, most analysts expect the race to extend into a second round, setting up three more weeks of campaigning in an already polarized country.
FAQ
When is Brazil’s presidential election?
The first round of Brazil election voting day 2026 is Sunday, October 4. If no candidate wins more than 50 percent of valid votes, the two leading candidates advance to a runoff on October 25.
How many people are voting in Brazil today?
Nearly 160 million Brazilians are eligible to vote. They are using electronic voting machines, which have been standard in Brazilian elections since the 1990s.
Who are the main candidates?
Incumbent President Luiz Inácio Lula da Silva faces Senator Flávio Bolsonaro, the eldest son of former president Jair Bolsonaro — who is under house arrest after being convicted of attempting to overturn the 2022 election result, according to Reuters.
When will results be known?
Because Brazil’s electronic voting machines count quickly, results are expected on Sunday evening local time. The Superior Electoral Court releases tallies as the polls close across the country’s time zones.
Sources: Reuters; Reuters/CNT/MDA poll; MercoPress.
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