2026 ELECTION · STATE PI · TSE FILES

Brazil's 2026 presidential election in Piauí (PI): results, turnout and swing.

Name: Brazil 2026 presidential election in Piauí (PI): results and turnout by round
Creator: Reveno Evidence

The numbers come from the TSE consolidated result files for Piauí, with SHA-256 checked when this page is generated. Results and turnout are observed; percentages, difference from Brazil and swing are derived, with the formula declared.

Scope: pi · Northeast
Registered voters (Round 2): 2,704,695
Share of the national electorate: 1.70%
Totalization closed at, Round 1: 2026-10-04 23:35:37 UTC-03:00
Totalization closed at, Round 2: 2026-10-25 21:25:00 UTC-03:00

Results by round

Round 1

Observed Source tse-6257-pi-u · observed at 2026-10-05 12:51:05 UTC-03:00 · sections totalized 100.00% · valid votes 2,146,394

Round 1 results in Piauí, by candidate. Observed
No.	Candidate	Party	Votes	% of valid votes
13	LULA	PT	1,523,710	70.99%
22	FLAVIO BOLSONARO	PL	517,028	24.09%
70	ESCRITOR AUGUSTO CURY	AVANTE	47,692	2.22%
14	RENAN SANTOS	MISSÃO	32,274	1.50%
55	RONALDO CAIADO	PSD	21,629	1.01%
30	ZEMA	NOVO	1,357	0.06%
80	SAMARA	UP	1,099	0.05%
27	CLARIANA BARAO	DC	504	0.02%
16	HERTZ DIAS	PSTU	443	0.02%
21	EDMILSON COSTA	PCB	319	0.01%
35	VETERINÁRIO WILSON GRASSI	DEMOCRATA	193	0.01%
29	RUI COSTA PIMENTA	PCO	146	0.01%

Round 2

Observed Source tse-6258-pi-u · observed at 2026-10-25 23:26:38 UTC-03:00 · sections totalized 100.00% · valid votes 2,179,848

Round 2 results in Piauí, by candidate. Observed
No.	Candidate	Party	Votes	% of valid votes
13	LULA	PT	1,653,989	75.88%
22	FLAVIO BOLSONARO	PL	525,859	24.12%

Turnout and abstention

Turnout and abstention in Piauí, by round.
Measure	Round 1	Round 2	State
Registered voters	2,704,758	2,704,695	Observed
Turnout	2,240,883	2,239,830	Observed
Abstention	463,875	464,865	Observed
Valid votes	2,146,394	2,179,848	Observed
Blank votes	28,329	16,137	Observed
Null votes	66,160	43,845	Observed
Turnout (% of registered voters)	82.85%	82.81%	Derived
Abstention (% of registered voters)	17.15%	17.19%	Derived
Blank (% of turnout)	1.26%	0.72%	Derived
Null (% of turnout)	2.95%	1.96%	Derived

Formula comparecimento_pct = 100 * comparecimento / eleitorado; abstencao_pct = 100 * abstencao / eleitorado; brancos_pct = 100 * brancos / comparecimento

In round 2, turnout in Piauí was 82.81% of registered voters, +2.03 pp relative to Brazil (80.78%), and abstention was 17.19%. From round 1 to round 2, abstention changed by +0.04 pp. See the definitions of turnout and abstention.

Comparison with Brazil

Measures in Piauí and in Brazil, with the difference in percentage points. Derived
Measure	Piauí	Brazil	Difference (pp)
Turnout (% of registered voters), Round 1	82.85%	78.92%	+3.93
Turnout (% of registered voters), Round 2	82.81%	80.78%	+2.03
Abstention (% of registered voters), Round 1	17.15%	21.08%	-3.93
Abstention (% of registered voters), Round 2	17.19%	19.22%	-2.03
Blank (% of turnout), Round 2	0.72%	1.12%	-0.40
Null (% of turnout), Round 2	1.96%	2.12%	-0.17
% of valid votes, nº 13, Round 1	70.99%	45.16%	+25.83
% of valid votes, nº 13, Round 2	75.88%	51.79%	+24.09
% of valid votes, nº 22, Round 1	24.09%	47.03%	-22.94
% of valid votes, nº 22, Round 2	24.12%	48.21%	-24.09

Formula diferenca_pp = valor_uf - valor_brasil

Brazil is the national total from the same TSE file, which already includes this state; it is not the average of the states. A positive difference means a higher value in this state.

Derived 16 of 28 in registered voters
Derived 8 of 28 in round 2 turnout (highest first)
Derived 21 of 28 in round 2 abstention (highest first)

Swing between rounds

Swing of the two finalists from round 1 to round 2 in Piauí. Derived
Candidate	Round 1 votes	Round 2 votes	Round 1 share, between the two	Round 2 share	Swing (pp)	Swing in Brazil (pp)	Vote gain
LULA (nº 13)	1,523,710	1,653,989	74.67%	75.88%	+1.21	+2.80	+130,279
FLAVIO BOLSONARO (nº 22)	517,028	525,859	25.34%	24.12%	-1.21	-2.80	+8,831

Formula first_round_two_candidate_normalized_share = v1_A / (v1_A + v1_B); second_round_share = v2_A / valid_t2; swing_pp = 100 * (second - first); absolute_vote_gain = v2_A - v1_A

Definitions: swing, two-candidate share and absolute vote gain.

Comparison with 2022

Piauí: round 2 abstention and share of no. 13 between nos. 13 and 22, in 2022 and 2026. Derived
Measure	2022	2026	Difference (pp)
Round 2 abstention (% of registered voters)	18.74%	17.19%	-1.55
Share of no. 13 between the two (round 2)	76.86%	75.88%	-0.98

Formula share = 100 * votes_X / (votes_X + votes_Y) no último turno; swing_pp = share_newer - share_older; delta_abstention_pp = abstention_pct_newer - abstention_pct_older

Comparison between cycles, not between rounds: the candidates are different, the electorate is different and rules and context changed. The difference describes the two published results; it measures no effect. The same candidacy number (the party number) was used by different people in the two cycles: the swing compares the number, not the person. Full comparison between cycles.

Sources

4 official TSE files used on this page, with SHA-256 checked at generation.
Id	Type	URL	Downloaded at	SHA-256	Bytes	State
`tse-6257-pi-u`	Consolidated result	https://resultados.tse.jus.br/oficial/ele2026/6257/dados/pi/pi-c0001-e006257-u.json	2026-11-02 20:59:06 UTC	`d6dac2da5cbff871ab4c323beae7df6902ccb6e9c7a6b38e17518b2eac8842a2`	9,333	Observed
`tse-6258-pi-u`	Consolidated result	https://resultados.tse.jus.br/oficial/ele2026/6258/dados/pi/pi-c0001-e006258-u.json	2026-11-02 20:59:20 UTC	`aa79f6fa2fbb7006348e1016ec4858bc215c3026a038f9c80283c6e534dac1ab`	3,166	Observed
`tse-6257-br-ab`	Coverage by state	https://resultados.tse.jus.br/oficial/ele2026/6257/dados/br/br-e006257-ab.json	2026-11-02 20:58:58 UTC	`9de639fcd123077cd10697d707d7c939d9a45e56fb5732fce04cea4ca3262a6e`	29,410	Observed
`tse-6258-br-ab`	Coverage by state	https://resultados.tse.jus.br/oficial/ele2026/6258/dados/br/br-e006258-ab.json	2026-11-02 20:59:12 UTC	`68f6ae0c8ca6a705591780c94819c45475ffed6d72e44b477d7bfe9a591ceb97`	29,409	Observed

The coverage file is the same for every state: it holds each one's closing time. The full case manifest is at manifesto.json (SHA-256 890aa5af22204752879a7d89e3612e93c9a043f857a52a78e060ec6b82c03352). What SHA-256 and a consolidated result are.

About this data

What it measures: Votes by candidate in both rounds, turnout (registered voters, turnout, abstention, blank and null votes), difference from Brazil's total and swing between rounds in Piauí.
Source: Brazil's Superior Electoral Court (TSE): the consolidated result file of each round and the coverage file, in the sources table.
Unit: Votes (count); share of valid votes, of registered voters or of turnout; percentage points (pp) for difference and swing.
Period: 2026-10-04 (Round 1) and 2026-10-25 (Round 2)
Last collected: 2026-11-02 23:18 UTC
Next scheduled collection: Daily at 09:30 UTC (06:30 in Brasília), by the evidence-tse engine, which checks the SHA-256 of every file. This page changes on the next site publication.
Maintained by: Reveno Evidence · evidence-tse engine, owner Thiago Holtz
Evidence state: Observed Derived
Version: Collection manifest, SHA-256 890aa5af22204752879a7d89e3612e93c9a043f857a52a78e060ec6b82c03352
License: Source data license: public data from the TSE, under the court's terms. License for the Reveno text and calculations: not declared yet; until then, cite this page.

Download the data

1
What is on screen
The tables on this page as CSV, with unformatted numbers and the evidence state of every row.
- Results by round and candidate CSV · 1.6 kB · SHA-256 086339f75842
- Turnout by round CSV · 500 bytes · SHA-256 e89a35a070af
2
The full set, with a manifest
A ZIP with every file behind the page, a README with the citation and license, and a manifest with the SHA-256 of each file.
- Full state set (ZIP) ZIP · 156.6 kB · SHA-256 774c6655bec1
3
For machines
A JSON at a stable address, with metadata, citation, tables and sources. The address does not change between publications; the content changes when the collection changes.
- State data for machines JSON · 10.7 kB · SHA-256 c3f375e1a68ehttps://evidence.reveno.com.br/eleicoes/br-pres-2026/uf/pi/dados.json

How to cite

Short citation for a chart or table caption, or a note

TSE (2026), processed by Reveno Evidence

Full citation with URL and access date

Reveno Evidence (2026). Brazil 2026 presidential election in Piauí (PI): results and turnout by round [Data set]. Source data: Brazil's Superior Electoral Court (TSE), consolidated result files for Piauí, collected on 2026-11-02 (UTC). Collection manifest, SHA-256 890aa5af22204752879a7d89e3612e93c9a043f857a52a78e060ec6b82c03352. Retrieved November 2, 2026, from https://evidence.reveno.com.br/en/elections/br-pres-2026/state/pi/

BibTeX

@misc{reveno_evidence_br_pres_2026_pi,
  author = {{Reveno Evidence}},
  title = {Brazil 2026 presidential election in Piauí (PI): results and turnout by round},
  year = {2026},
  publisher = {Reveno},
  url = {https://evidence.reveno.com.br/en/elections/br-pres-2026/state/pi/},
  urldate = {2026-11-02},
  note = {Source data: Brazil's Superior Electoral Court (TSE), consolidated result files for Piauí, collected on 2026-11-02 (UTC). Collection manifest, SHA-256 890aa5af22204752879a7d89e3612e93c9a043f857a52a78e060ec6b82c03352}
}

The access date is filled in with the date of this version of the page; replace it with the date you accessed it.

When you use a number, also cite the source file: id, URL and SHA-256 are in the sources table.

Source data license: public data from the TSE, under the court's terms. License for the Reveno text and calculations: not declared yet; until then, cite this page.

Brazil's 2026 presidential election in Piauí (PI): results, turnout and swing.

Results by round

Round 1

Round 2

Turnout and abstention

Comparison with Brazil

Swing between rounds

Comparison with 2022

Sources

About this data

Download the data

What is on screen

The full set, with a manifest

For machines

How to cite

Other states

Neighboring states

Same region: Northeast

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