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

Office briefing

ZAPOTITLAN LAGUNAS — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ZAPOTITLAN LAGUNAS / OAXACA · municipal · Municipal governmentMX-M-20-568

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
ZAPOTITLAN LAGUNAS / OAXACA
Next election
2027-06-06
Linked upcoming event
next-6cb0763cf97611e8b0acaee0
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

  • MORENA58.5%
  • PRI14.3%
  • PRD7.7%
  • PT4.7%
  • FXMO1.8%
  • NAO1.1%
  • PUP0.7%
  • C_PT_PUP_NAO0.2%
Results for event-10e87c250883d08d15b56712
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Sbfba82dce5/202474258.5%UnknownRecorded
PRImexico/Sbfba82dce5/202418114.3%UnknownRecorded
PRDmexico/Sbfba82dce5/2024987.7%UnknownRecorded
PTmexico/Sbfba82dce5/2024594.7%UnknownRecorded
FXMOmexico/Sbfba82dce5/2024231.8%UnknownRecorded
NAOmexico/Sbfba82dce5/2024141.1%UnknownRecorded
PUPmexico/Sbfba82dce5/202490.7%UnknownRecorded
C_PT_PUP_NAOmexico/Sbfba82dce5/202420.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PVEM38.2%
  • NAO25.8%
  • RSP13.6%
  • MORENA10.7%
  • PAN_PRI_PRD6.2%
  • PES0.8%
  • PT0.7%
Results for event-a098c429edb12ff99c294fcb
Label / candidateParty codeVotesShareSeatsStatus
PVEMmexico/Sb859877f01/202155738.2%UnknownRecorded
NAOmexico/Sb859877f01/202137625.8%UnknownRecorded
RSPmexico/Sb859877f01/202119813.6%UnknownRecorded
MORENAmexico/Sb859877f01/202115610.7%UnknownRecorded
PAN_PRI_PRDmexico/Sb859877f01/2021906.2%UnknownRecorded
PESmexico/Sb859877f01/2021120.8%UnknownRecorded
PTmexico/Sb859877f01/2021100.7%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD_MC40.9%
  • PT_MORENA_ES38.7%
  • PRI12.5%
  • PMR0.2%
Results for event-ec184e1a5b87f1cc068ca8f6
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRD_MCmexico/S8de510d7b7/201855840.9%UnknownRecorded
PT_MORENA_ESmexico/S8de510d7b7/201852838.7%UnknownRecorded
PRImexico/S8de510d7b7/201817112.5%UnknownRecorded
PMRmexico/S8de510d7b7/201830.2%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=49.73404255319149, oldest_gap=2.3809523809523796, previous_gap=12.937812723373842

pedersen volatility

Provisional volatility

83.88percentage 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=[[0,16.04609929078014,8.687943262411348,5.2304964539007095,0,0,65.78014184397163,4.25531914893617],[0,0,0,0.7147962830593281,39.81415296640458,0,11.150822015725518,48.32022873481058],[0,13.571428571428571,0,0,0,0,0,86.42857142857143]]

pedersen volatility

Provisional volatility

51.68percentage 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=[[0,16.04609929078014,8.687943262411348,5.2304964539007095,0,0,65.78014184397163,4.25531914893617],[0,0,0,0.7147962830593281,39.81415296640458,0,11.150822015725518,48.32022873481058],[0,13.571428571428571,0,0,0,0,0,86.42857142857143]]

pedersen volatility

Provisional volatility

67.78percentage 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=[[0,16.04609929078014,8.687943262411348,5.2304964539007095,0,0,65.78014184397163,4.25531914893617],[0,0,0,0.7147962830593281,39.81415296640458,0,11.150822015725518,48.32022873481058],[0,13.571428571428571,0,0,0,0,0,86.42857142857143]]

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. “ZAPOTITLAN LAGUNAS — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-568. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sbfba82dce5, mexico--Sb859877f01, mexico--S8de510d7b7.