
AI-generated summary
The research was carried out after defining the candidates who advanced to the second round of the presidential elections, on October 4th. Governor Mailza Assis took office in April 2026, after the departure of Gladson Camelí, who left the government to run for the Senate and was not elected.
This is the first round of research since the definition of the candidates who advanced to the second round, on the 4th.
Voting will be on October 25th. On that date, voters across the country and abroad will also decide the second round of the presidential election, between Flávio Bolsonaro (PL) and Lula (PT).
For 78% of voters interviewed in the survey, the choice of candidate is definitive. Another 21% say they can still change their vote until the second round.
Quaest also shows the results of the spontaneous poll, in which the names of the candidates are not shown to voters.
Quaest interviewed 1,098 people aged 16 and over between October 9th and 12th. The margin of error is 3 percentage points, plus or minus, and the confidence level is 95%. The research registration number is AC-05379/2026.
➡️ The current governor took office in April this year – until then, she was deputy to Gladson Camelí (PP), who left the government to run for the Senate and was not elected.
According to the Quaest survey, 48% of voters consider the Mailza Assis administration "great or good" and 31% consider it "bad or terrible". See the numbers below:
Quaest also asked voters what their assessment was of Mailza Assis's work as governor. See the results:

Quaest Research interviewed 2,154 people between October 10th and 13th, with a margin of error of two percentage points and 95% confidence, in addition to evaluating voting intentions, rejection and knowledge of proposals. Datafolha will release a new survey on Thursday (15), with 2,520 respondents between October 13 and 15, the same margin of error and level of confidence.

Minister Kassio Nunes Marques, from the TSE, ordered the suspension of the 'Lula's Army' channel on WhatsApp for electoral propaganda without prior registration, following a legal dispute with Flávio Bolsonaro's campaign. The channel was registered by Lula's campaign and can return to operation after 48 hours.

The elected governor of Rio de Janeiro, Douglas Ruas (PL), announced the elected vice-governor Fernanda Louback as secretary of Inclusion and Women, with her own budget to expand public policies for women and people with disabilities throughout the state.
Pope Francis was diagnosed with lung adenocarcinoma; the BC reports that R$5.8 billion can be redeemed by almost 24 million people; Nunes Marques authorizes the group 'Lula's Army', but suspends the channel for 48 hours citing electoral law; the 'Tropa do Flávio' channel on WhatsApp was also not registered with the TSE; the MDB splits in the second round with 16 directorates supporting Flávio and 10 supporting Lula; and Minister Fachin asks the PF for all citations to ministers on a descriptive basis.

The leader of the MDB in the Senate, Eduardo Braga, declared support for Lula's reelection on behalf of the party's senators, while 10 directorates from the North and Northeast announced support for the PT member. In contrast, the MDB formalized majority support for Flávio Bolsonaro, with 17 of the 27 state directorates declaring support for the PL candidate. Veneziano Vital do Rêgo also supported Lula and criticized Flávio Bolsonaro for threatening the tax reform approved in 2024.

UnB students held an event from 4pm at the Museum of the Republic in support of Lula's re-election and criticizing the far right, with the presence of Agnelo Queiroz and deputies Max Maciel, Gabriel Magno and Erika Kokay. PMDF reported that Via S1 on Esplanada dos Ministérios is fully occupied.