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

Office briefing

SAN ANDRES ZAUTLA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SAN ANDRES ZAUTLA / OAXACA · municipal · Municipal governmentMX-M-20-99

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
SAN ANDRES ZAUTLA / OAXACA
Next election
2027-06-06
Linked upcoming event
next-f780a9957ad0fe0292d60a33
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

  • PRI41.0%
  • MORENA30.5%
  • PT15.9%
  • MUJER5.5%
  • PVEM2.6%
  • MC0.6%
  • FXMO0.3%
  • PRD0.2%
Results for event-94309359bc16babf2eaa8f36
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S804ccdd7f3/202495641%UnknownRecorded
MORENAmexico/S804ccdd7f3/202471230.5%UnknownRecorded
PTmexico/S804ccdd7f3/202437115.9%UnknownRecorded
MUJERmexico/S804ccdd7f3/20241285.5%UnknownRecorded
PVEMmexico/S804ccdd7f3/2024612.6%UnknownRecorded
MCmexico/S804ccdd7f3/2024140.6%UnknownRecorded
FXMOmexico/S804ccdd7f3/202460.3%UnknownRecorded
PRDmexico/S804ccdd7f3/202440.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MORENA48.1%
  • PAN_PRI_PRD39.3%
  • FXM7.9%
  • PT_PVEM1.1%
  • PES0.6%
  • MC0.2%
Results for event-4758b9e9503c2c5a9a30f2d6
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Sad54fdcc44/202199548.1%UnknownRecorded
PAN_PRI_PRDmexico/Sad54fdcc44/202181339.3%UnknownRecorded
FXMmexico/Sad54fdcc44/20211637.9%UnknownRecorded
PT_PVEMmexico/Sad54fdcc44/2021221.1%UnknownRecorded
PESmexico/Sad54fdcc44/2021130.6%UnknownRecorded
MCmexico/Sad54fdcc44/202150.2%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PMR51.3%
  • PRI_PVEM_PANAL34.3%
  • PT_MORENA_ES10.9%
  • PAN_PRD_MC0.9%
Results for event-3015acb3c64b8e755b2d733f
Label / candidateParty codeVotesShareSeatsStatus
PMRmexico/S659f132d6e/20181,18951.3%UnknownRecorded
PRI_PVEM_PANALmexico/S659f132d6e/201879634.3%UnknownRecorded
PT_MORENA_ESmexico/S659f132d6e/201825210.9%UnknownRecorded
PAN_PRD_MCmexico/S659f132d6e/2018220.9%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

45.220–100 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=10.834813499111899, oldest_gap=17.397078353253647, previous_gap=9.050223769269017

pedersen volatility

Provisional volatility

62.18percentage 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=[[0,42.45115452930728,0.17761989342806395,16.47424511545293,2.708703374777975,0.6216696269982238,31.616341030195382,5.950266429840142],[0,0,0,0,0,0.2486325211337643,49.477871705619094,50.27349577324714],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=[[0,42.45115452930728,0.17761989342806395,16.47424511545293,2.708703374777975,0.6216696269982238,31.616341030195382,5.950266429840142],[0,0,0,0,0,0.2486325211337643,49.477871705619094,50.27349577324714],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=[[0,42.45115452930728,0.17761989342806395,16.47424511545293,2.708703374777975,0.6216696269982238,31.616341030195382,5.950266429840142],[0,0,0,0,0,0.2486325211337643,49.477871705619094,50.27349577324714],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. “SAN ANDRES ZAUTLA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-99. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S804ccdd7f3, mexico--Sad54fdcc44, mexico--S659f132d6e.