
AI-generated summary
The Senate elections in Santa Catarina will define two representatives for the National Congress, with voting on October 4, 2026, along with other state and federal positions.
Thirteen candidates are competing for two seats for the Senate in Santa Catarina in the 2026 elections. On October 4, voters need to enter the candidate number, made up of three digits, to decide the state's representatives. It is necessary to choose two different candidates — if the voter votes twice for the same person, the second vote is canceled.
Follow the results of the 1st round of elections in SC in real time on Folha
See below the numbers of candidates for the Federal Senate for Santa Catarina, in alphabetical order and with the names displayed in the electronic ballot box.
Electoral glue: Fill in and print with your candidates’ data
In elections for the Senate, those who obtain the highest votes win. There is no second round. On October 4th, voters will also vote for state deputy, federal deputy, governor and president.
Search for your candidates: search here by name, state or party and access the profile and declaration of assets of each candidate for state deputy, federal deputy, senator, governor and president.
Electoral polls: see here the results of electoral polls released during the campaign.

Messages extracted from the cell phone of Daniel Vorcaro, owner of Banco Master, show that he considered former Finance Minister Fernando Haddad one of his biggest opponents. The conversations, obtained by the Federal Police and published by Folha and O Globo, took place in October 2023, shortly before Vorcaro's arrest and the extrajudicial liquidation of Banco Master by the Central Bank.
Quaest survey released this Saturday shows Lula with 46% and Flávio Bolsonaro with 45% of valid votes, in a technical tie. There is a movement of useful votes from voters from other right-wing candidacies towards Flávio Bolsonaro, according to Felipe Nunes from Quaest. The survey was commissioned by Globo and O Globo, and polled 3,702 voters between October 2 and 3, with a margin of error of 2 percentage points and a confidence level of 95%.

Renan Santos, Mission's presidential candidate, began his campaign in Santos, where he defended investments in port infrastructure, and continued to São Paulo, where he walked through the center, spoke at Largo São Francisco and participated in a podcast, ending the first day of the electoral agenda.

Flávio Bolsonaro, PL candidate for President, started his agenda in Santa Bárbara d’Oeste, in São Paulo, with a motorbike to Americana, where he defended a modern government that respects freedoms and the Constitution. In the afternoon, he completed his second motorbike in Rio de Janeiro, starting from Campo Grande and ending in Bangu, covering 12 km.

The calculation of valid votes follows the way in which the Electoral Court publishes official election results, without considering blank and invalid votes and abstentions. Datafolha, commissioned by Globo and the newspaper Folha de S.Paulo, interviewed 2,506 people aged 16 or over between September 29th and October 1st. The margin of error is 2 percentage points, plus or minus, and the confidence level is 95%. The TSE registration number is BR-BR-08039/2026.

On the last day of the first round campaign, President Lula completed his agenda in São Paulo, walked along Rua Augusta alongside Geraldo Alckmin and Fernando Haddad, defended investments in education and science, and highlighted the importance of voters over 70 years of age voting.