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

Office briefing

ZACATEPEC — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ZACATEPEC / MORELOS · municipal · Municipal governmentMX-M-17-31

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
ZACATEPEC / MORELOS
Next election
2027-06-06
Linked upcoming event
next-fb600e9030cf7173e092cb5e
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

  • MAS30.2%
  • MORENA24.3%
  • MC18.9%
  • PT13.5%
  • PVEM6.3%
  • PAN_PRI_PRD_RSPM3.7%
  • PES0.3%
  • PNAM0.2%
  • PROGRESA0.2%
Results for event-a1ddcb7d085236870043df46
Label / candidateParty codeVotesShareSeatsStatus
MASmexico/S7d5ea04130/20245,99630.2%UnknownRecorded
MORENAmexico/S7d5ea04130/20244,82224.3%UnknownRecorded
MCmexico/S7d5ea04130/20243,75218.9%UnknownRecorded
PTmexico/S7d5ea04130/20242,69313.5%UnknownRecorded
PVEMmexico/S7d5ea04130/20241,2456.3%UnknownRecorded
PAN_PRI_PRD_RSPMmexico/S7d5ea04130/20247273.7%UnknownRecorded
PESmexico/S7d5ea04130/2024600.3%UnknownRecorded
PNAMmexico/S7d5ea04130/2024460.2%UnknownRecorded
PROGRESAmexico/S7d5ea04130/2024320.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PESM21.2%
  • MORENA19.5%
  • PT17.3%
  • PANALM12.5%
  • PRI9.1%
  • MC4.1%
  • RSP2.2%
  • BC2.1%
  • MAS1.9%
  • FXM1.7%
  • RPM1.4%
  • PRD1.4%
  • PODEMOS1.3%
  • PAN_PSD1.1%
  • FUTURO0.5%
  • PVEM0.3%
  • PES0.2%
  • PHM0.1%
  • FM0.1%
  • MP0.1%
  • APM0.0%
  • PAS0.0%
Results for event-aac7141c09db7b27c00641ab
Label / candidateParty codeVotesShareSeatsStatus
PESMmexico/Se6ae4ad76c/20213,77721.2%UnknownRecorded
MORENAmexico/Se6ae4ad76c/20213,47319.5%UnknownRecorded
PTmexico/Se6ae4ad76c/20213,08017.3%UnknownRecorded
PANALMmexico/Se6ae4ad76c/20212,22212.5%UnknownRecorded
PRImexico/Se6ae4ad76c/20211,6229.1%UnknownRecorded
MCmexico/Se6ae4ad76c/20217384.1%UnknownRecorded
RSPmexico/Se6ae4ad76c/20213982.2%UnknownRecorded
BCmexico/Se6ae4ad76c/20213822.1%UnknownRecorded
MASmexico/Se6ae4ad76c/20213361.9%UnknownRecorded
FXMmexico/Se6ae4ad76c/20213081.7%UnknownRecorded
RPMmexico/Se6ae4ad76c/20212491.4%UnknownRecorded
PRDmexico/Se6ae4ad76c/20212471.4%UnknownRecorded
PODEMOSmexico/Se6ae4ad76c/20212281.3%UnknownRecorded
PAN_PSDmexico/Se6ae4ad76c/20211921.1%UnknownRecorded
FUTUROmexico/Se6ae4ad76c/2021980.5%UnknownRecorded
PVEMmexico/Se6ae4ad76c/2021610.3%UnknownRecorded
PESmexico/Se6ae4ad76c/2021360.2%UnknownRecorded
PHMmexico/Se6ae4ad76c/2021220.1%UnknownRecorded
FMmexico/Se6ae4ad76c/2021120.1%UnknownRecorded
MPmexico/Se6ae4ad76c/2021100.1%UnknownRecorded
APMmexico/Se6ae4ad76c/202140%UnknownRecorded
PASmexico/Se6ae4ad76c/202130%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PANAL27.6%
  • PT_MORENA_ES25.4%
  • PRD_PSD12.2%
  • PRI7.7%
  • PAN7.2%
  • CAND_IND275.8%
  • CAND_IND284.3%
  • PVEM2.9%
  • MC2.9%
  • HUMANISTA1.7%
Results for event-c282008518b6a72a672fab76
Label / candidateParty codeVotesShareSeatsStatus
PANALmexico/Sacb6492d0b/20185,59227.6%UnknownRecorded
PT_MORENA_ESmexico/Sacb6492d0b/20185,14525.4%UnknownRecorded
PRD_PSDmexico/Sacb6492d0b/20182,47112.2%UnknownRecorded
PRImexico/Sacb6492d0b/20181,5637.7%UnknownRecorded
PANmexico/Sacb6492d0b/20181,4687.2%UnknownRecorded
CAND_IND27mexico/Sacb6492d0b/20181,1675.8%UnknownRecorded
CAND_IND28mexico/Sacb6492d0b/20188624.3%UnknownRecorded
PVEMmexico/Sacb6492d0b/20185902.9%UnknownRecorded
MCmexico/Sacb6492d0b/20185782.9%UnknownRecorded
HUMANISTAmexico/Sacb6492d0b/20183451.7%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

78.080–100 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=6.059980385072006, oldest_gap=2.259744198978815, previous_gap=1.7373414104469092

pedersen volatility

Provisional volatility

26.27percentage 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=[[0,0,0,13.900789758942858,6.426469829143653,19.367160481081918,24.890311257936304,35.415268672895266],[0,9.26963081495028,1.411589895988113,17.602011658475256,0.3486112698594125,4.217624871413876,19.847982626585896,47.30254886272717],[7.42126282796623,7.901521662201102,0,0,2.9826601284060463,2.921995854607957,0,78.77255952681865]]

pedersen volatility

Provisional volatility

41.53percentage 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=[[0,0,0,13.900789758942858,6.426469829143653,19.367160481081918,24.890311257936304,35.415268672895266],[0,9.26963081495028,1.411589895988113,17.602011658475256,0.3486112698594125,4.217624871413876,19.847982626585896,47.30254886272717],[7.42126282796623,7.901521662201102,0,0,2.9826601284060463,2.921995854607957,0,78.77255952681865]]

pedersen volatility

Provisional volatility

33.9percentage 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=[[0,0,0,13.900789758942858,6.426469829143653,19.367160481081918,24.890311257936304,35.415268672895266],[0,9.26963081495028,1.411589895988113,17.602011658475256,0.3486112698594125,4.217624871413876,19.847982626585896,47.30254886272717],[7.42126282796623,7.901521662201102,0,0,2.9826601284060463,2.921995854607957,0,78.77255952681865]]

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. “ZACATEPEC — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-17-31. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S7d5ea04130, mexico--Se6ae4ad76c, mexico--Sacb6492d0b.