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

Office briefing

ZACUALPAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ZACUALPAN / MEXICO · municipal · Municipal governmentMX-M-15-118

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
ZACUALPAN / MEXICO
Next election
2027-06-06
Linked upcoming event
next-2d3bd897350d5dd7d2359e55
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

  • PVEM_PT_MORENA59.0%
  • CC_PAN_PRI_PRD_NAEM35.5%
  • MC1.4%
Results for event-40775604642494b64503d187
Label / candidateParty codeVotesShareSeatsStatus
PVEM_PT_MORENAmexico/S2f402c0b54/20244,49859%UnknownRecorded
CC_PAN_PRI_PRD_NAEMmexico/S2f402c0b54/20242,70335.5%UnknownRecorded
MCmexico/S2f402c0b54/20241101.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD45.8%
  • PT_MORENA_NAEM_CC34.6%
  • FXM11.4%
  • PVEM2.7%
  • MC1.2%
  • PES0.0%
  • RSP0.0%
Results for event-3fd2636440bd3b0b92fed28f
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/S7dcb84732f/20213,30445.8%UnknownRecorded
PT_MORENA_NAEM_CCmexico/S7dcb84732f/20212,49434.6%UnknownRecorded
FXMmexico/S7dcb84732f/202182211.4%UnknownRecorded
PVEMmexico/S7dcb84732f/20211972.7%UnknownRecorded
MCmexico/S7dcb84732f/2021851.2%UnknownRecorded
PESmexico/S7dcb84732f/20210 (recorded zero)0% (recorded zero)UnknownRecorded
RSPmexico/S7dcb84732f/20210 (recorded zero)0% (recorded zero)UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PANAL45.9%
  • PT_MORENA_ES30.9%
  • PRI14.5%
  • PAN_PRD_MC3.4%
  • VR0.6%
Results for event-98ea6464f5a89fb7f10ad7ae
Label / candidateParty codeVotesShareSeatsStatus
PANALmexico/Sf6ca28ce24/20183,54945.9%UnknownRecorded
PT_MORENA_ESmexico/Sf6ca28ce24/20182,39030.9%UnknownRecorded
PRImexico/Sf6ca28ce24/20181,11814.5%UnknownRecorded
PAN_PRD_MCmexico/Sf6ca28ce24/20182653.4%UnknownRecorded
VRmexico/Sf6ca28ce24/2018470.6%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

0.880–100 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=24.55204486390371, oldest_gap=15.728049938933367, previous_gap=11.735728774268331

pedersen volatility

Provisional volatility

2.85percentage 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=[[0,0,0,0,0,1.5045821365066339,0,98.49541786349337],[0,0,0,0,2.854245146334396,1.2315270935960592,0,95.91422776006954],[0,15.171665083457729,0,0,0,0,0,84.82833491654227]]

pedersen volatility

Provisional volatility

15.17percentage 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=[[0,0,0,0,0,1.5045821365066339,0,98.49541786349337],[0,0,0,0,2.854245146334396,1.2315270935960592,0,95.91422776006954],[0,15.171665083457729,0,0,0,0,0,84.82833491654227]]

pedersen volatility

Provisional volatility

9.01percentage 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=[[0,0,0,0,0,1.5045821365066339,0,98.49541786349337],[0,0,0,0,2.854245146334396,1.2315270935960592,0,95.91422776006954],[0,15.171665083457729,0,0,0,0,0,84.82833491654227]]

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. “ZACUALPAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-15-118. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S2f402c0b54, mexico--S7dcb84732f, mexico--Sf6ca28ce24.