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States · Northeast (Nordeste) · PI

Piauí

Capital Teresina. 3.392.617 people (IBGE 2026), 2.704.758 electors, 224 municipalities. 10 federal deputies, 30 seats in the Assembleia Legislativa, three senators. On 25 October Lula won here with 75,9%.

Electors per deputy
270.476
8th fewest of 27 · a vote weighs 1,8× one in São Paulo
Turnout
82,8%
first round · runoff 82,8%
Quociente eleitoral
210.906
Chamber · assembly 70.153

Governor · Governador

Who governs
Piauí.

  • In office

    Rafael Fonteles (PT)

    Until 6 Jan 2027

  • Elected 2026

    Rafael Fonteles (PT)

    Won in the first round, 4 Oct · takes office 6 Jan 2027

Governor, first round · 4 Oct · 2.021.200 valid votes
  • Rafael Fonteles PT 70,9%
  • Joel Rodrigues PP 27,5%
  • Professor Gisvaldo PSOL 0,5%
  • Dra. Lúcia Santos PSDB 0,5%
  • Elizeu Aguiar NOVO 0,3%
  • Santiago Belizário UP 0,1%

President · both rounds

The national vote,
here.

2.240.883 voted in the first round (82,8% of electors), 28.329 blank and 66.160 null. Blank and null ballots do not count toward the majority (Constitution art. 77 §2).

First round · 4 Oct · 2.146.394 valid votes
  • Lula PT 71,0%
  • Flavio Bolsonaro PL 24,1%
  • Escritor Augusto Cury AVANTE 2,2%
  • Renan Santos MISSÃO 1,5%
  • Ronaldo Caiado PSD 1,0%
  • Zema NOVO 0,1%
Runoff · 25 Oct · 2.179.848 valid votes
  • Lula 1.653.989 75,88%
  • Flavio Bolsonaro 525.859 24,12%

Senate · two seats in 2026

Two senators
elected.

  • Marcelo Castro (MDB)

    1.307.833 votes · 35,7% · A FORÇA DO POVO

  • Júlio César O Julim do Lula (PSD)

    989.146 votes · 27,0% · A FORÇA DO POVO

Each voter cast two votes; the two most voted won eight-year terms from 1 Feb 2027. Shares are of all valid senate votes.

Senate · most-voted candidates
  • Marcelo Castro MDB 35,7%
  • Júlio César O Julim do Lula PSD 27,0%
  • Ciro Nogueira PP 24,7%
  • Tiago Junqueira PL 8,8%
  • Antônio Barros NOVO 1,1%
  • Maria Madalena Nunes PSOL 0,7%

Chamber of Deputies · 10 seats · QE 210.906

10 federal
deputies.

2.109.063 valid votes for the Chamber. 6 seats went to lists by quociente partidário and 4 as leftovers. Georgiano (PSD) had 1,1 quotients of personal votes and carried 1 list-mate. Every step in the seat lab →

PT 3 · MDB 2 · PSD 2 · PP 1 · PV 1 · REPUBLICANOS 1

Assembleia Legislativa · 30 seats · QE 70.153

The state legislature.

Elected the same day by the same open-list rule: 2.104.590 valid votes, 27 seats by quotient and 3 as leftovers. Seats: three times the state's federal deputies up to 36, then one more per deputy above 12 (Constitution art. 27).

PT 13 · MDB 8 · PSD 5 · PP 3 · PV 1

The 30 elected, by votes

Severo Eulálio (MDB, 90.728), Flávio Júnior (PT, 71.869), Dr. Thales Coelho (PT, 58.887), Dr. Vinicius (PT, 57.089), Cel Carlos Augusto (MDB, 55.829), Firmino Paulo (PT, 55.146), Dr. Gil Carlos (PT, 55.084), Limma (PT, 54.246), Anyara Santos (MDB, 51.919), Toninho de Caridade (PSD, 50.998), Janainna Marques (PT, 49.601), Rubens Vieira (PT, 48.417), João Madison (MDB, 47.539), Ana Paula (MDB, 47.356), Themístocles Filho (MDB, 46.638), Júlio Cesar Filho (PSD, 45.972), Fábio Novo (PT, 45.707), Wilson Capote (PSD, 45.274), Henrique Pires (MDB, 40.058), Fábio Xavier (PT, 39.349), Evaldo Gomes (PT, 38.646), Nerinho (PT, 38.620), Helio Isaias (PT, 37.306), Breno Macêdo (PV, 35.729), Gustavo Neiva (PP, 35.188), Simone Pereira (PSD, 33.914), Dr. Hélio (MDB, 33.391), Marden Menezes (PSD, 32.135), Zé Fernando (PP, 30.578), Júnior Percy (PP, 29.628)

Photos: Rafael Fonteles — Ipea, CC BY 2.0 · Marcelo Costa e Castro — Agência Senado, Attribution · Julio Cesar de Carvalho Lima — Luis Macedo, CC BY 3.0 · Ciro Nogueira Lima Filho — Antonio Cruz/ABr, CC BY 3.0 br · Georgiano — Assembleia Legislativa do Piauí, CC BY 4.0 · Zé Santana — Geraldo Magela/Agência Senado, CC BY 2.0 · Flávio Nogueira — Alexandre Amarante, CC BY-SA 4.0 · Wilson Martins — Marcello Casal Jr/ABr, CC BY 3.0 br . Via Wikimedia Commons.