PI · Amarante - Água Branca - Regeneração immediate region

Barro Duro: how it voted for president

In the 2026 runoff, Lula won Barro Duro with 73.07% of valid votes against 26.93% for Flavio Bolsonaro: a margin of 46.14 points, 42.57 points left of Brazil.

Solid left

Lean versus Brazil: −49.34pts; Weighted mean of the municipality's right − left margin minus Brazil's in the 2026, 2022, 2018 and 2014 runoffs.
Electorate (2026): 6,413; 96th largest electorate in Piauí
Side changes: 1; Times the leading bloc changed from one election to the next, in 9 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.

Barro Duro−46.14 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)73.07% Flavio Bolsonaro (PL)26.93%	−46.14 pts	Left bloc	77.84%
2026 10/04/2026	Round 1	Lula (PT)68.63% Flavio Bolsonaro (PL)27.42% Escritor Augusto Cury (AVANTE)1.56% Ronaldo Caiado (PSD)1.22% +8 more Renan Santos (MISSÃO)1.10% Samara (UP)0.04% Edmilson Costa (PCB)0.02% Zema (NOVO)0.02% Hertz Dias (PSTU)0.00% Clariana Barao (DC)0.00% Rui Costa Pimenta (PCO)0.00% Veterinário Wilson Grassi (DEMOCRATA)0.00%	−40.49 pts	Left bloc	80.05%
2022 10/30/2022	Round 2	Lula (PT)74.91% Jair Bolsonaro (PL)25.09%	−49.83 pts	Left bloc	76.43%
2022 10/02/2022	Round 1	Lula (PT)72.20% Jair Bolsonaro (PL)23.21% Ciro Gomes (PDT)2.19% Simone Tebet (MDB)1.79% +7 more Soraya Thronicke (UNIÃO)0.45% Felipe D Avila (NOVO)0.07% Vera (PSTU)0.04% Sofia Manzano (PCB)0.04% Padre Kelmon (PTB)0.00% Constituinte Eymael (DC)0.00% Léo Péricles (UP)0.00%	−48.97 pts	Left bloc	77.55%
2018 10/28/2018	Round 2	Fernando Haddad (PT)76.34% Jair Bolsonaro (PSL)23.66%	−52.67 pts	Left bloc	80.07%
2018 10/07/2018	Round 1	Fernando Haddad (PT)64.08% Jair Bolsonaro (PSL)20.62% Ciro Gomes (PDT)10.80% Geraldo Alckmin (PSDB)1.86% +9 more João Amoêdo (NOVO)0.81% Henrique Meirelles (MDB)0.56% Marina Silva (REDE)0.49% Cabo Daciolo (PATRI)0.42% Alvaro Dias (PODE)0.23% Guilherme Boulos (PSOL)0.12% Eymael (DC)0.02% Vera (PSTU)0.00% João Goulart Filho (PPL)0.00%	−50.96 pts	Left bloc	84.35%
2014 10/26/2014	Round 2	Dilma (PT)78.22% Aécio Neves (PSDB)21.78%	−56.43 pts	Left bloc	68.68%
2014 10/05/2014	Round 1	Dilma (PT)68.24% Marina Silva (PSB)19.35% Aécio Neves (PSDB)10.63% Eduardo Jorge (PV)1.19% +4 more Pastor Everaldo (PSC)0.29% Luciana Genro (PSOL)0.19% Levy Fidelix (PRTB)0.07% Zé Maria (PSTU)0.02%	−78.02 pts	Left bloc	73.70%
2010 10/31/2010	Round 2	Dilma (PT)73.56% José Serra (PSDB)26.44%	−47.13 pts	Left bloc	71.22%
2010 10/03/2010	Round 1	Dilma (PT)71.27% Marina Silva (PV)14.48% José Serra (PSDB)13.80% Plínio (PSOL)0.29% +3 more Zé Maria (PSTU)0.10% Eymael (PSDC)0.03% Levy Fidelix (PRTB)0.03%	−72.30 pts	Left bloc	74.52%
2006 10/29/2006	Round 2	Lula (PT)82.07% Geraldo Alckmin (PSDB)17.93%	−64.15 pts	Left bloc	73.64%
2006 10/01/2006	Round 1	Lula (PT)69.61% Geraldo Alckmin (PSDB)25.77% Heloísa Helena (PSOL)2.43% Cristovam Buarque (PDT)1.92% +3 more Luciano Bivar (PSL)0.16% Ana Maria Rangel (PRP)0.08% José Maria Eymael (PSDC)0.03%	−47.93 pts	Left bloc	79.53%
2002 10/27/2002	Round 2	Lula (PT)56.59% José Serra (PSDB)43.41%	−13.18 pts	Left bloc	71.57%
2002 10/06/2002	Round 1	Lula (PT)38.25% José Serra (PSDB)24.70% Garotinho (PSB)22.03% Ciro (PPS)14.83% +2 more Zé Maria (PSTU)0.17% Rui Costa Pimenta (PCO)0.03%	−50.60 pts	Left bloc	82.72%
1998 10/04/1998	Round 1	Fernando Henrique (PSDB)49.82% Lula (PT)28.31% Ciro Gomes (PPS)13.34% Enéas (PRONA)2.11% +8 more Brigadeiro Ivan Frota (PMN)1.45% Eymael (PSDC)1.10% João de Deus Barbosa (PT do B)0.94% Zé Maria (PSTU)0.70% Thereza Ruiz (PTN)0.63% Sergio Bueno (PSC)0.55% Sirkis (PV)0.55% Vasco Neto (PSN)0.51%	+9.43 pts	Right bloc	91.17%
1994 10/03/1994	Round 1	Fernando Henrique Cardoso (PSDB)60.36% Luiz Inacio Lula da Silva (PT)27.94% Orestes Quercia (PMDB)3.82% Eneas Ferreira Carneiro (PRONA)3.19% +4 more Carlos Antonio Gomes (PRN)2.96% Leonel de Moura Brizola (PDT)0.82% Esperidiao Amin Helou Filho (PPR)0.66% Hernani Goulart Fortuna (PSC)0.25%	+42.48 pts	Right bloc	71.93%

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

When the municipality changed sides

2002(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.