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

Office briefing

ZIMATLAN DE ALVAREZ — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ZIMATLAN DE ALVAREZ / OAXACA · municipal · Municipal governmentMX-M-20-570

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
ZIMATLAN DE ALVAREZ / OAXACA
Next election
2027-06-06
Linked upcoming event
next-e539f964ea64de8b94ca7efd
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

  • PVEM23.8%
  • MC19.1%
  • PT18.3%
  • MORENA13.0%
  • PRD9.2%
  • FXMO5.5%
  • PAN4.1%
  • NAO1.4%
  • MUJER0.7%
  • PRI0.7%
Results for event-547f9a2783bbbbc120c16ff7
Label / candidateParty codeVotesShareSeatsStatus
PVEMmexico/Se89a3589d0/20242,81623.8%UnknownRecorded
MCmexico/Se89a3589d0/20242,26519.1%UnknownRecorded
PTmexico/Se89a3589d0/20242,16418.3%UnknownRecorded
MORENAmexico/Se89a3589d0/20241,53913%UnknownRecorded
PRDmexico/Se89a3589d0/20241,0949.2%UnknownRecorded
FXMOmexico/Se89a3589d0/20246475.5%UnknownRecorded
PANmexico/Se89a3589d0/20244874.1%UnknownRecorded
NAOmexico/Se89a3589d0/20241641.4%UnknownRecorded
MUJERmexico/Se89a3589d0/2024870.7%UnknownRecorded
PRImexico/Se89a3589d0/2024860.7%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD31.0%
  • PVEM21.7%
  • PT16.4%
  • MORENA15.2%
  • FXM7.1%
  • PES4.9%
  • PUP0.6%
Results for event-214103ffcb5db310fd481d7d
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/S94a4727be5/20213,32131%UnknownRecorded
PVEMmexico/S94a4727be5/20212,32621.7%UnknownRecorded
PTmexico/S94a4727be5/20211,75816.4%UnknownRecorded
MORENAmexico/S94a4727be5/20211,62915.2%UnknownRecorded
FXMmexico/S94a4727be5/20217637.1%UnknownRecorded
PESmexico/S94a4727be5/20215244.9%UnknownRecorded
PUPmexico/S94a4727be5/2021630.6%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD_MC50.7%
  • PT_MORENA_ES23.9%
  • PSD13.9%
  • PRI_PANAL3.8%
  • PVEM2.3%
  • PUP0.8%
Results for event-daf4ec69203aa5b73460a2cd
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRD_MCmexico/S3aa5813cd8/20185,69550.7%UnknownRecorded
PT_MORENA_ESmexico/S3aa5813cd8/20182,68623.9%UnknownRecorded
PSDmexico/S3aa5813cd8/20181,55613.9%UnknownRecorded
PRI_PANALmexico/S3aa5813cd8/20184253.8%UnknownRecorded
PVEMmexico/S3aa5813cd8/20182582.3%UnknownRecorded
PUPmexico/S3aa5813cd8/2018940.8%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

57.020–100 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=4.855053308661557, oldest_gap=28.084748926638042, previous_gap=9.582049306625578

pedersen volatility

Provisional volatility

39.2percentage 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=[[4.2911269715393425,0.7577760155079742,9.639615825182835,19.06775927394484,24.81275883337739,19.957705524715834,13.560666137985725,7.912591417746057],[0,0,0,16.92989214175655,22.39984591679507,0,15.687596302003081,44.9826656394453],[0,0,0,0,2.4080642150457345,0,0,97.59193578495426]]

pedersen volatility

Provisional volatility

52.61percentage 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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[4.2911269715393425,0.7577760155079742,9.639615825182835,19.06775927394484,24.81275883337739,19.957705524715834,13.560666137985725,7.912591417746057],[0,0,0,16.92989214175655,22.39984591679507,0,15.687596302003081,44.9826656394453],[0,0,0,0,2.4080642150457345,0,0,97.59193578495426]]

pedersen volatility

Provisional volatility

45.9percentage 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

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[4.2911269715393425,0.7577760155079742,9.639615825182835,19.06775927394484,24.81275883337739,19.957705524715834,13.560666137985725,7.912591417746057],[0,0,0,16.92989214175655,22.39984591679507,0,15.687596302003081,44.9826656394453],[0,0,0,0,2.4080642150457345,0,0,97.59193578495426]]

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. “ZIMATLAN DE ALVAREZ — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-570. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Se89a3589d0, mexico--S94a4727be5, mexico--S3aa5813cd8.