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

Office briefing

GENERAL HELIODORO CASTILLO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · GENERAL HELIODORO CASTILLO / GUERRERO · municipal · Municipal governmentMX-M-12-33

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
GENERAL HELIODORO CASTILLO / GUERRERO
Next election
2027-06-06
Linked upcoming event
next-09db3d76be944311f43ffee2
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

  • PT_PVEM_MORENA75.0%
  • PRI11.0%
  • MC7.1%
  • PBG1.4%
  • MLGRO0.2%
Results for event-fbaa135c7c6d3f3afa3015d2
Label / candidateParty codeVotesShareSeatsStatus
PT_PVEM_MORENAmexico/S8ff5882afb/20247,95875%UnknownRecorded
PRImexico/S8ff5882afb/20241,16611%UnknownRecorded
MCmexico/S8ff5882afb/20247547.1%UnknownRecorded
PBGmexico/S8ff5882afb/20241471.4%UnknownRecorded
MLGROmexico/S8ff5882afb/2024180.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PRI78.6%
  • MORENA6.5%
  • MC4.4%
  • PAN2.1%
  • PRD1.6%
  • PT_PVEM1.5%
Results for event-fc720ec0abaeb8c46f5e422a
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S4a77f06250/20217,65178.6%UnknownRecorded
MORENAmexico/S4a77f06250/20216346.5%UnknownRecorded
MCmexico/S4a77f06250/20214294.4%UnknownRecorded
PANmexico/S4a77f06250/20212042.1%UnknownRecorded
PRDmexico/S4a77f06250/20211561.6%UnknownRecorded
PT_PVEMmexico/S4a77f06250/20211451.5%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI68.1%
  • MORENA_ES11.1%
  • PAN_PRD_MC10.6%
  • PT3.8%
  • PVEM0.9%
  • PPG0.1%
Results for event-a25b43f578136874e69d77f9
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S6312267b6a/20188,51968.1%UnknownRecorded
MORENA_ESmexico/S6312267b6a/20181,38311.1%UnknownRecorded
PAN_PRD_MCmexico/S6312267b6a/20181,32710.6%UnknownRecorded
PTmexico/S6312267b6a/20184813.8%UnknownRecorded
PVEMmexico/S6312267b6a/20181170.9%UnknownRecorded
PPGmexico/S6312267b6a/2018150.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

0 (recorded zero)0–100 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=67.62919446380563, oldest_gap=60.26009120081068, previous_gap=76.11454604620891

pedersen volatility

Provisional volatility

82.16percentage 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=[[0,11.610076670317634,0,0,0,7.507716817683959,0,80.8822065119984],[2.2128213472177025,82.9916476841306,1.6921575008135372,0,0,4.653433127237228,6.877101637921683,1.5728387026792494],[0,71.93886167877048,0,4.061813882790069,0.9880087823002871,0,0,23.011315656139164]]

pedersen volatility

Provisional volatility

26.49percentage 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=[[0,11.610076670317634,0,0,0,7.507716817683959,0,80.8822065119984],[2.2128213472177025,82.9916476841306,1.6921575008135372,0,0,4.653433127237228,6.877101637921683,1.5728387026792494],[0,71.93886167877048,0,4.061813882790069,0.9880087823002871,0,0,23.011315656139164]]

pedersen volatility

Provisional volatility

54.33percentage 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=[[0,11.610076670317634,0,0,0,7.507716817683959,0,80.8822065119984],[2.2128213472177025,82.9916476841306,1.6921575008135372,0,0,4.653433127237228,6.877101637921683,1.5728387026792494],[0,71.93886167877048,0,4.061813882790069,0.9880087823002871,0,0,23.011315656139164]]

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. “GENERAL HELIODORO CASTILLO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-12-33. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S8ff5882afb, mexico--S4a77f06250, mexico--S6312267b6a.