PI · Amarante - Água Branca - Regeneração immediate region

Olho D'Água do Piauí: how it voted for president

In the 2026 runoff, Lula won Olho D'Água do Piauí with 82.29% of valid votes against 17.71% for Flavio Bolsonaro: a margin of 64.58 points, 61.01 points left of Brazil.

Solid left

Lean versus Brazil: −65.85pts; Weighted mean of the municipality's right − left margin minus Brazil's in the 2026, 2022, 2018 and 2014 runoffs.
Electorate (2026): 2,708; 220th largest electorate in Piauí
Side changes: 1; Times the leading bloc changed from one election to the next, in 8 elections since 1994.
Bellwether?: No; Has voted for the national winner since 2022.

On the map of Piauí

2026 runoff, colored by margin: pale in tight races, deep in landslides. Click a municipality to open its page.

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← Left bloc aheadRight bloc ahead →

Margin in percentage points of valid votes (right − left).

Municipality, state and Brazil

Right − left margin in the 2026 runoff, in percentage points.

Olho D'Água do Piauí−64.58 pts
Piauí−51.75 pts
Brazil−3.57 pts

Negative = left ahead; positive = right ahead.

Margin over time

Right − left margin in each election (the runoff where there was one), compared with Brazil's.

Every election

Year	Round	Candidates (% of valid votes)	Margin (right − left)	Bloc ahead	Turnout
2026 10/25/2026	Round 2	Lula (PT)82.29% Flavio Bolsonaro (PL)17.71%	−64.58 pts	Left bloc	80.61%
2026 10/04/2026	Round 1	Lula (PT)78.59% Flavio Bolsonaro (PL)18.19% Renan Santos (MISSÃO)1.06% Escritor Augusto Cury (AVANTE)1.01% +8 more Ronaldo Caiado (PSD)0.92% Samara (UP)0.09% Edmilson Costa (PCB)0.05% Clariana Barao (DC)0.05% Rui Costa Pimenta (PCO)0.05% Hertz Dias (PSTU)0.00% Zema (NOVO)0.00% Veterinário Wilson Grassi (DEMOCRATA)0.00%	−59.58 pts	Left bloc	82.13%
2022 10/30/2022	Round 2	Lula (PT)81.79% Jair Bolsonaro (PL)18.21%	−63.58 pts	Left bloc	79.08%
2022 10/02/2022	Round 1	Lula (PT)79.07% Jair Bolsonaro (PL)15.30% Ciro Gomes (PDT)3.06% Simone Tebet (MDB)1.80% +7 more Soraya Thronicke (UNIÃO)0.66% Padre Kelmon (PTB)0.11% Vera (PSTU)0.00% Sofia Manzano (PCB)0.00% Constituinte Eymael (DC)0.00% Felipe D Avila (NOVO)0.00% Léo Péricles (UP)0.00%	−64.26 pts	Left bloc	80.02%
2018 10/28/2018	Round 2	Fernando Haddad (PT)84.07% Jair Bolsonaro (PSL)15.93%	−68.14 pts	Left bloc	84.36%
2018 10/07/2018	Round 1	Fernando Haddad (PT)75.34% Jair Bolsonaro (PSL)12.22% Ciro Gomes (PDT)8.60% Geraldo Alckmin (PSDB)1.24% +9 more Marina Silva (REDE)0.85% Cabo Daciolo (PATRI)0.74% Henrique Meirelles (MDB)0.45% Guilherme Boulos (PSOL)0.28% Alvaro Dias (PODE)0.17% João Amoêdo (NOVO)0.11% Vera (PSTU)0.00% Eymael (DC)0.00% João Goulart Filho (PPL)0.00%	−70.14 pts	Left bloc	87.08%
2014 10/26/2014	Round 2	Dilma (PT)87.84% Aécio Neves (PSDB)12.16%	−75.67 pts	Left bloc	74.33%
2014 10/05/2014	Round 1	Dilma (PT)82.59% Marina Silva (PSB)10.77% Aécio Neves (PSDB)6.29% Pastor Everaldo (PSC)0.23% +2 more Zé Maria (PSTU)0.06% Luciana Genro (PSOL)0.06%	−86.95 pts	Left bloc	78.01%
2010 10/31/2010	Round 2	Dilma (PT)80.33% José Serra (PSDB)19.67%	−60.66 pts	Left bloc	77.96%
2010 10/03/2010	Round 1	Dilma (PT)80.42% José Serra (PSDB)11.67% Marina Silva (PV)7.43% Plínio (PSOL)0.21% +3 more Eymael (PSDC)0.14% Ivan Pinheiro (PCB)0.07% Levy Fidelix (PRTB)0.07%	−76.25 pts	Left bloc	80.35%
2006 10/29/2006	Round 2	Lula (PT)89.09% Geraldo Alckmin (PSDB)10.91%	−78.17 pts	Left bloc	76.00%
2006 10/01/2006	Round 1	Lula (PT)82.75% Geraldo Alckmin (PSDB)14.41% Heloísa Helena (PSOL)1.35% Cristovam Buarque (PDT)1.29% +2 more Luciano Bivar (PSL)0.13% José Maria Eymael (PSDC)0.06%	−70.79 pts	Left bloc	79.74%
2002 10/27/2002	Round 2	José Serra (PSDB)53.78% Lula (PT)46.22%	+7.55 pts	Right bloc	73.69%
2002 10/06/2002	Round 1	José Serra (PSDB)43.83% Lula (PT)39.44% Ciro (PPS)8.71% Garotinho (PSB)7.67% +1 more Zé Maria (PSTU)0.35%	−12.33 pts	Left bloc	81.80%
1998 10/04/1998	Round 1	Fernando Henrique (PSDB)44.08% Lula (PT)29.46% Ciro Gomes (PPS)16.52% Enéas (PRONA)2.79% +8 more Brigadeiro Ivan Frota (PMN)1.79% Vasco Neto (PSN)1.56% Eymael (PSDC)1.12% Zé Maria (PSTU)1.00% João de Deus Barbosa (PT do B)0.78% Thereza Ruiz (PTN)0.33% Sergio Bueno (PSC)0.33% Sirkis (PV)0.22%	+0.45 pts	Right bloc	82.50%

Percentages of valid votes in the municipality. Turnout = voters over the electorate. Source: TSE.

When the municipality changed sides

2006(Round 2)·Right bloc→Left bloc

Other municipalities in the Amarante - Água Branca - Regeneração immediate region

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Official TSE results by municipality (1994–2026); the 2026 runoff comes from the TSE's official results publication. Every municipality's index can be downloaded at /dados.