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

Office briefing

SANTO DOMINGO PETAPA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SANTO DOMINGO PETAPA / OAXACA · municipal · Municipal governmentMX-M-20-513

Read the complete original research briefing

INE result distributions kept separate. Certified seats, supplementary elections, coalition and boundary audit remain.

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

Geography
SANTO DOMINGO PETAPA / OAXACA
Next election
2027-06-06
Linked upcoming event
next-c0428d3612aea2aa6134a1b3
Registry qualification
Unknown

2. How certain is that date?

2027-06-06 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2024

Special · Legal certification not established · candidate marks

  • MC37.3%
  • MORENA30.7%
  • PVEM28.5%
  • PRI2.9%
Results for event-c05a4eb44c0a2d6cc53ea00f
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/S252b14f983/20241,73537.3%UnknownRecorded
MORENAmexico/S252b14f983/20241,42930.7%UnknownRecorded
PVEMmexico/S252b14f983/20241,32528.5%UnknownRecorded
PRImexico/S252b14f983/20241332.9%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MORENA48.5%
  • PAN_PRI_PRD35.2%
  • PVEM11.6%
  • FXM2.7%
  • PT1.3%
  • PES0.1%
  • NAO0.0%
Results for event-4c02534b81d0760e8798cd73
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S168a29c276/20212,60448.5%UnknownRecorded
PAN_PRI_PRDmexico/S168a29c276/20211,88935.2%UnknownRecorded
PVEMmexico/S168a29c276/202162211.6%UnknownRecorded
FXMmexico/S168a29c276/20211472.7%UnknownRecorded
PTmexico/S168a29c276/2021721.3%UnknownRecorded
PESmexico/S168a29c276/202160.1%UnknownRecorded
NAOmexico/S168a29c276/202120%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PT_MORENA_ES35.9%
  • PRI_PVEM32.3%
  • PANAL28.9%
  • PAN_PRD_MC1.8%
  • PUP0.1%
Results for event-b25812d44faa5d8af78e6dbf
Label / candidateParty codeVotesShareSeatsStatus
PT_MORENA_ESmexico/S51b0b0ebed/20181,85535.9%UnknownRecorded
PRI_PVEMmexico/S51b0b0ebed/20181,67232.3%UnknownRecorded
PANALmexico/S51b0b0ebed/20181,49528.9%UnknownRecorded
PAN_PRD_MCmexico/S51b0b0ebed/2018951.8%UnknownRecorded
PUPmexico/S51b0b0ebed/201850.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

58.280–100 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=6.620510601471221, oldest_gap=3.5728231159703228, previous_gap=13.384500187195805

pedersen volatility

Provisional volatility

57.44percentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

Comparison status: Latest interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[[0,2.877542189528343,0,0,28.66724361748161,37.53786239723063,30.917351795759412,0],[0,0,0,1.347809809060277,11.643579183826283,0,48.745788094346686,38.26282291276676],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,2.877542189528343,0,0,28.66724361748161,37.53786239723063,30.917351795759412,0],[0,0,0,1.347809809060277,11.643579183826283,0,48.745788094346686,38.26282291276676],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Seven exact standalone INE party labels. Joint coalition combinations, independents and other parties remain Other, without allocating coalition votes. This coarse grouped comparison can conceal coalition-member shifts and requires the stated geographic/event review. An interval is withheld if either election has no list mapped to an explicit named group. This is aggregate share change, not individual voter switching. Event review: Actual-event and/or comparability review incomplete

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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,2.877542189528343,0,0,28.66724361748161,37.53786239723063,30.917351795759412,0],[0,0,0,1.347809809060277,11.643579183826283,0,48.745788094346686,38.26282291276676],null]

Source-reported control: Unverified. 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

No local poll supplied.

7. Unresolved issues and sources

No open research issues attached to this office.

Sources

Cite this record

Center for Digital Democracy. “SANTO DOMINGO PETAPA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-513. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S252b14f983, mexico--S168a29c276, mexico--S51b0b0ebed.