
AI-generated summary
The elections in Mato Grosso took place in the first round, with TRE-MT monitoring the functioning of electronic voting machines and recording technical and police incidents. There was speculation about minister Gilmar Mendes' vote and statements by candidates about the impact of electoral polls on polarization.
The Regional Electoral Court of Mato Grosso (TRE-MT) has so far recorded 62 technical incidents at polling places across the state. In total, 15 electronic voting machines needed to be replaced. According to the court, most of the problems were resolved by turning the equipment off and on again.
14 police incidents were also recorded during the election. Of this total, 13 are related to suspected exit polls in different cities in Mato Grosso. The other incident was recorded in Sinop, on suspicion of vote buying.
In total, 12 people were taken to police stations to provide clarification on possible electoral crimes.
After speculation that Minister Gilmar Mendes had voted with a cell phone in his hand, the electoral judge went to the polling place, in Diamantino, to check the situation. According to TRE-MT, the poll workers said that the object was a functional wallet with a stick, and not a cell phone.
The candidate for President of the Republic, Clariana Barão (DC), voted late this Sunday morning (4), in Cuiabá. After voting, she spoke briefly to the press and criticized the electoral polls, which, according to her, would contribute to the polarization of the dispute.
"This research encourages this polarization. Exit polls, for me, are not sustainable", he stated.
The governor and candidate for re-election, Otaviano Pivetta (Republicans), voted this Sunday morning (4), in Lucas do Rio Verde, during the first round of elections. Before voting, he stated that, despite the turbulence throughout the campaign, it is now up to voters to decide the result at the polls. "We see everything during the campaign, and it was a period of turbulence. Today is the day for the people to decide", he stated.
AI outlook — possibilities, not facts
TRE-MT is expected to conclude investigations into exit-poll and vote-buying incidents in the coming weeks.
Likely · Within weeks
Criticism of electoral polls by candidates can influence the public debate about their regulation in future elections.
Possible · Within months

On Sunday 4th, presidential elections in Brazil had voting closed at 5pm Brasília time, with Lula leading in 24 countries abroad and Flávio Bolsonaro ahead in the total number of votes (32,431 against 23,732). The Ministry of Justice registered 527 electoral incidents until 4 pm, including electoral crimes and seizure of campaign materials. The MPE took legal action after Romeu Zema used a cell phone in the voting booth and asked for the removal of false content about ballot boxes. A 106-year-old voter voted in São Paulo.

Senate candidate André do Prado (PL) voted at Escola Ivan Brasil, in Guararema, accompanied by his family and local authorities. Until 3 pm, Operation Elections 2026 in São Paulo recorded 86 incidents and 34 arrests, mostly due to exit polls. In Franca, a 69-year-old woman was arrested for distributing election leaflets. At least 33 electoral zones lost power due to rain, but voting was not interrupted.

Voter Rafaella Cortinoves was unable to vote in the first round of the 2026 elections after a tree fell on her car during a storm in Piracicaba (SP), preventing her from reaching the polling place in the Vila Fátima neighborhood. She was with two friends, who managed to vote at the Professor Antônio de Mello Cotrim school. No one was injured, but another car was hit and a wheelchair user had difficulty accessing the polling station due to the closure of Rua Dona Stella.

The candidate for the government of Ceará Ieri Braga (PCO) voted on Sunday (4) at Colégio Maria Ester II, in Parque Dois Irmãos, in Fortaleza, accompanied by his wife and daughter.

On election Sunday (4), voters in Baixada Santista faced heavy rain, while elderly people like Hermenegildo, 96, and Maurício, 62, who used a skateboard to vote, highlighted their civic engagement. There were isolated cases of irregular distribution of campaign material and a woman fell ill at a polling station in Santos.

Three TSE ministers and assistants to Kassio Nunes Marques and André Mendonça consider the opening of preliminary proceedings by the PF on alleged foreign interference in the 2026 elections to be exaggerated, claiming that the action could judicialize the election and unduly question the results of the polls.