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Partial researchResearch snapshot 2026-09-13. Evidence gaps remain; see Coverage for requirements.

Office briefing

São Paulo — Governor

Tracked current office. Identifiers stay separate from display names.

Brazil · São Paulo / SP · regional · GovernorBR-SP-G

Read the complete original research briefing

First round 4 October 2026; governor runoff 25 October where required. TSE ordinary-election returns aggregated once from state files, excluding the duplicate national BR file. Party votes are not governing coalition control. Legislative votes include nominal plus valid list votes. Judicial retotalizations and changed party labels require review. The 2014 file uses legacy nominal/list fields; later files separately identify valid, converted and subjudice votes. This is an explicit definition-comparability limitation.

1. What office, where, and when is the next election?

Geography
São Paulo / SP
Next election
2026-10-04
Linked upcoming event
next-3bf52dd91647fe8bc1f762dc
Registry qualification
Unknown

2. How certain is that date?

2026-10-04 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2022-10-30

unknown · Legal certification not established · unknown

  • REPUBLICANOS55.3%
  • PT44.7%
Results for event-abeac6d7ef42763d40f7fe0d
Label / candidateParty codeVotesShareSeatsStatus
REPUBLICANOS · TARCÍSIObrazil/S5cd0a4c40e/202213,480,64355.3%UnknownRecorded
PT · FERNANDO HADDADbrazil/S5cd0a4c40e/202210,909,37144.7%UnknownRecorded

2018-10-28

unknown · Legal certification not established · unknown

  • PSDB51.7%
  • PSB48.3%
Results for event-fc1367bc3d32b6ae0f1e8aad
Label / candidateParty codeVotesShareSeatsStatus
PSDB · JOÃO DORIAbrazil/S0d7ac4a666/201810,990,35051.7%UnknownRecorded
PSB · MARCIO FRANÇAbrazil/S0d7ac4a666/201810,248,74048.3%UnknownRecorded

2014-10-05

unknown · Legal certification not established · list votes

  • PSDB57.3%
  • PMDB21.5%
  • PT18.2%
  • PV1.2%
  • PSOL0.9%
  • PHS0.6%
  • PRTB0.1%
  • PCB0.1%
  • PCO0.1%
Results for event-ebdd197857c815dc7ddb7ed1
Label / candidateParty codeVotesShareSeatsStatus
PSDB · GERALDO ALCKMINbrazil/S2c70216745/201412,230,80757.3%UnknownRecorded
PMDB · SKAFbrazil/S2c70216745/20144,594,70821.5%UnknownRecorded
PT · PADILHAbrazil/S2c70216745/20143,888,58418.2%UnknownRecorded
PV · GILBERTO NATALINIbrazil/S2c70216745/2014260,6961.2%UnknownRecorded
PSOL · MARINGONIbrazil/S2c70216745/2014187,4870.9%UnknownRecorded
PHS · LAÉRCIO BENKObrazil/S2c70216745/2014132,0420.6%UnknownRecorded
PRTB · WALTER CIGLIONIbrazil/S2c70216745/201422,8220.1%UnknownRecorded
PCB · WAGNER FARIASbrazil/S2c70216745/201412,9580.1%UnknownRecorded
PCO · RAIMUNDO SENAbrazil/S2c70216745/201411,1180.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

45.240–100 historical closeness

Actual-event and/or comparability review incomplete

Comparison status: Provisional imported-series comparison; actual-event review open

Method ci.weighted-gap.v1. Inputs: latest_gap=10.542314571857155, oldest_gap=35.78098292590742, previous_gap=3.4917221029714582

pedersen volatility

Withheld volatility

Unknownpercentage points

Not calculated: comparable fixed party grouping unavailable

Comparison status: Latest interval · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=[], interval=Latest interval, vectors=[]

pedersen volatility

Withheld volatility

Unknownpercentage points

Not calculated: comparable fixed party grouping unavailable

Comparison status: Previous interval · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=[], interval=Previous interval, vectors=[]

pedersen volatility

Withheld volatility

Unknownpercentage points

Not calculated: comparable fixed party grouping unavailable

Comparison status: Both intervals mean · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=[], interval=Both intervals mean, vectors=[]

Source-reported control: Tarcísio de Freitas (Republicanos); verified in Datafolha reporting 11 Sep 2026. Current tenure requires separate dated evidence.

5. Officeholder evidence

Dated roster observations are not automatically current tenure. The source current-office flag means this office is tracked now, not that the last winner still holds it.

No officeholder observation supplied.

6. Polling context

  • Paraná Pesquisas

    vote intention · fieldwork 2026-09-07–2026-09-10

    Poll snapshot; no calibrated win probability or automatic incumbent-defeat flag

  • Quaest

    vote intention · fieldwork 2026-09-04–2026-09-07

    Poll snapshot; no calibrated win probability or automatic incumbent-defeat flag

National context is listed on the polling page. It is not a local forecast.

7. Unresolved issues and sources

First round 4 October 2026; governor runoff 25 October where required. TSE ordinary-election returns aggregated once from state files, excluding the duplicate national BR file. Party votes are not governing coalition control. Legislative votes include nominal plus valid list votes. Judicial retotalizations and changed party labels require review. The 2014 file uses legacy nominal/list fields; later files separately identify valid, converted and subjudice votes. This is an explicit definition-comparability limitation. Roraima legal certification, Rio and other specific replacement/current-control cases remain open. Eight municipal replacement tickets are tracked; ordinary municipal renewals are outside the window. Public-vote baselines for Alagoas and Amazonas are supplied separately from their indirect selections. Roraima’s primary 2010 cycle is recovered; the June 2026 proclamation is still unresolved. Rio’s signed 2026 legislative retotalization verifies the imported 2022 votes and seats, with 70 named elected deputies added; later membership and governing-coalition control still need dated verification.

    Sources

    Cite this record

    Center for Digital Democracy. “São Paulo — Governor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/BR-SP-G. Sources: brazil--url-580aebec6bb5c27e76b98bb4, brazil--url-ef95aa16df1e62f699a27949, brazil--url-653ade48bf64a7388c4b910b, brazil--S5cd0a4c40e, brazil--S0d7ac4a666, brazil--S2c70216745, brazil--url-1856b370e8b7a282665d7d1c, brazil--url-98efc73d999b596aaee54a91.