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

Office briefing

ATLAMAJALCINGO DEL MONTE — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ATLAMAJALCINGO DEL MONTE / GUERRERO · municipal · Municipal governmentMX-M-12-9

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
ATLAMAJALCINGO DEL MONTE / GUERRERO
Next election
2027-06-06
Linked upcoming event
next-6ab8eab7ce0c814edba70d68
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

  • PT44.9%
  • MORENA30.3%
  • PRD19.3%
  • PBG0.6%
  • PVEM0.4%
  • PRI0.2%
  • PES0.2%
  • PAN0.2%
Results for event-6c4a92c8d6024a6f642a5830
Label / candidateParty codeVotesShareSeatsStatus
PTmexico/S2e0f1aad48/20241,45944.9%UnknownRecorded
MORENAmexico/S2e0f1aad48/202498430.3%UnknownRecorded
PRDmexico/S2e0f1aad48/202462719.3%UnknownRecorded
PBGmexico/S2e0f1aad48/2024190.6%UnknownRecorded
PVEMmexico/S2e0f1aad48/2024120.4%UnknownRecorded
PRImexico/S2e0f1aad48/202460.2%UnknownRecorded
PESmexico/S2e0f1aad48/202460.2%UnknownRecorded
PANmexico/S2e0f1aad48/202450.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MORENA36.0%
  • PT28.9%
  • PRD23.0%
  • PRI8.0%
  • PVEM0.7%
Results for event-71225ea78d245cbae8f371b0
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S43c6da4f19/20211,15736%UnknownRecorded
PTmexico/S43c6da4f19/202192928.9%UnknownRecorded
PRDmexico/S43c6da4f19/202173723%UnknownRecorded
PRImexico/S43c6da4f19/20212568%UnknownRecorded
PVEMmexico/S43c6da4f19/2021230.7%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • MORENA_ES45.0%
  • PVEM24.4%
  • PAN_PRD_MC17.0%
  • PT6.7%
  • PRI0.8%
  • PPG0.4%
  • PSG0.3%
Results for event-0cc71d6f8856e901934a0b30
Label / candidateParty codeVotesShareSeatsStatus
MORENA_ESmexico/S6ce9870e11/20181,35745%UnknownRecorded
PVEMmexico/S6ce9870e11/201873724.4%UnknownRecorded
PAN_PRD_MCmexico/S6ce9870e11/201851217%UnknownRecorded
PTmexico/S6ce9870e11/20182026.7%UnknownRecorded
PRImexico/S6ce9870e11/2018230.8%UnknownRecorded
PPGmexico/S6ce9870e11/2018120.4%UnknownRecorded
PSGmexico/S6ce9870e11/201890.3%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

32.40–100 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=15.234124438742786, oldest_gap=21.739130434782606, previous_gap=7.350096711798841

pedersen volatility

Provisional volatility

17.81percentage 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=[[0.1603592046183451,0.19243104554201412,20.109044259140475,46.7928159076331,0.38486209108402825,0,31.558691468890313,0.8017960230917254],[0,8.252740167633785,23.75886524822695,29.94842037395229,0.7414571244358479,0,37.29851708575113,0],[0,0.8064516129032258,0,7.082748948106592,25.841514726507715,0,0,66.26928471248246]]

pedersen volatility

Provisional volatility

91.37percentage 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=[[0.1603592046183451,0.19243104554201412,20.109044259140475,46.7928159076331,0.38486209108402825,0,31.558691468890313,0.8017960230917254],[0,8.252740167633785,23.75886524822695,29.94842037395229,0.7414571244358479,0,37.29851708575113,0],[0,0.8064516129032258,0,7.082748948106592,25.841514726507715,0,0,66.26928471248246]]

pedersen volatility

Provisional volatility

54.59percentage 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=[[0.1603592046183451,0.19243104554201412,20.109044259140475,46.7928159076331,0.38486209108402825,0,31.558691468890313,0.8017960230917254],[0,8.252740167633785,23.75886524822695,29.94842037395229,0.7414571244358479,0,37.29851708575113,0],[0,0.8064516129032258,0,7.082748948106592,25.841514726507715,0,0,66.26928471248246]]

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. “ATLAMAJALCINGO DEL MONTE — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-12-9. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S2e0f1aad48, mexico--S43c6da4f19, mexico--S6ce9870e11.