
Reduction was driven by the drop in invalid votes, which reached the lowest rate since 2002
In the five largest cities in the Campinas region, blank and invalid votes for the Senate fell from 32% in 2018 to 16% in 2026, a reduction of 48% in absolute numbers, driven mainly by the drop in invalid votes, which reached 8.7%, the lowest rate since 2002, while Guilherme Derrrite (PP) and André do Prado (PL) were elected senators for São Paulo.
AI-generated summary
In São Paulo, elections for the Senate occur in two cycles: in one election, a seat is contested; in the following, two vacancies are renewed. In 2026, two vacancies per state were renewed, as in 2018.
Senate Plenary — Photo: Ton Molina/Agência Senado
The number of blank and null votes in the choice of the two seats for the Senate among voters in the five largest cities in the Campinas region fell by half in the 2026 Elections. The total in the municipalities of Campinas, Sumaré, Indaiatuba, Americana and Hortolândia reached 16%, compared to 32% in 2018, the last election in which the state of São Paulo had two seats up for grabs like now.
An analysis based on data from the Superior Electoral Court (TSE) shows that the rate of blank and null votes in elections with two Senate seats returned to the level observed in 2002.
This year, Guilherme Derrrite (PP) and André do Prado (PL) were elected senators for São Paulo - they were the most voted in the 31 cities in the g1 Campinas coverage area.
Blank and null votes in the Senate race in the 5 largest cities in the Campinas region
Comparative data from the elections with two seats up for grabs in the state of São Paulo.
Source: TSE
In absolute numbers, the five municipalities recorded 767.8 thousand blank and invalid votes in 2018. This year, the total fell to 399.2 thousand, a reduction of 48%. At the same time, the proportion of valid votes rose from 68% to 84% of the total votes cast for the position.
The drop was mainly driven by the reduction in invalid votes. In the five cities, they went from 509.1 thousand in 2018 to 216.5 thousand in 2026. The percentage fell from 21.2% to 8.7%, the lowest rate since 2002.
Blank votes also fell, from 258.6 thousand to 182.6 thousand.
How was the voting
Candidates for the Senate for São Paulo Guilherme Derrite (PP), André do Prado (PL), Marina Silva (Rede) and Simone Tebet (PSB) — Photo: Reproduction/TV Globo
In the five largest cities in the Campinas region, Derrite and André do Prado monopolized the race for the Senate.
The two totaled 1.29 million votes, almost two thirds of the total received by the four main candidates, while Simone Tebet (PSB) and Marina Silva (Rede) received 755 thousand votes.
Sum of votes in the top 5:
Guilherme Derrite (PP): 658,638 votes
André do Prado (PL): 630,609 votes
Simone Tebet (PSB): 386,176 votes
Marina Silva (Network): 368,965 votes
This year, 2/3 of the Senate were renewed, which corresponds to two vacancies per state.
Each federative unit (which includes the Federal District) has three senators, who serve eight-year terms, with no limits for re-election.
The elections are interspersed: in one election, the states renew a seat, in the next, two seats are renewed.
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The numbers released refer to voting in the municipality and do not indicate who was elected or advanced to the second round. The report was produced automatically based on TSE data and with the support of an artificial intelligence system, under the supervision of journalists, and can be updated with new information.

The numbers released refer to voting in the municipality and do not indicate who was elected or advanced to the second round. The report was produced automatically based on TSE data and with the support of an artificial intelligence system, under the supervision of journalists, and can be updated with new information.

The numbers released refer to voting in the municipality and do not indicate who was elected or advanced to the second round. The report was produced automatically based on TSE data and with the support of an artificial intelligence system, under the supervision of journalists, and can be updated with new information.

Automated reporting presents votes by polling place based on TSE data, without indicating elected officials or candidates for the second round, and allows updates and corrections via form.

Of the 14,387 voters eligible to vote in Olho d'Água das Cunhãs, 2,784 did not appear in the 1st round, resulting in an abstention of 19.35%. The numbers only refer to voting in the municipality and do not indicate who was elected or advanced to the second round.

Automatic reporting presents the voting numbers for president in each electoral section of E. E. Libertador Simon Bolivar, in the 2nd electoral zone, with guidance on how to locate the zone and section number on the voter registration card and e-Título, as well as warnings about updates and errors.