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

Office briefing

MAZATAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · MAZATAN / CHIAPAS · municipal · Municipal governmentMX-M-7-54

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
MAZATAN / CHIAPAS
Next election
2027-06-06
Linked upcoming event
next-9c45b710de53a9280d75a5d3
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

  • MORENA29.6%
  • PT24.4%
  • RSP21.0%
  • PVEM14.7%
  • MC2.2%
  • PES1.8%
  • PAN_PRI_PRD1.3%
  • PMCH1.0%
  • PCHU0.7%
Results for event-b34371bd344ffe43758ce2a2
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Sec66197e61/20243,97129.6%UnknownRecorded
PTmexico/Sec66197e61/20243,27524.4%UnknownRecorded
RSPmexico/Sec66197e61/20242,82121%UnknownRecorded
PVEMmexico/Sec66197e61/20241,97514.7%UnknownRecorded
MCmexico/Sec66197e61/20242942.2%UnknownRecorded
PESmexico/Sec66197e61/20242421.8%UnknownRecorded
PAN_PRI_PRDmexico/Sec66197e61/20241811.3%UnknownRecorded
PMCHmexico/Sec66197e61/20241341%UnknownRecorded
PCHUmexico/Sec66197e61/2024890.7%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PT20.7%
  • PVEM13.5%
  • PAN11.3%
  • PCHU10.3%
  • PES9.6%
  • MORENA8.8%
  • PMCH8.2%
  • FXM3.9%
  • PRI3.5%
  • RSP2.7%
  • MC2.5%
  • PNA1.2%
  • PPCH1.0%
  • PRD0.0%
  • CAND_IND10.0%
  • CAND_IND20.0%
  • CAND_IND30.0%
  • CAND_IND40.0%
  • CAND_IND50.0%
  • CAND_IND60.0%
  • CAND_IND70.0%
  • CAND_IND80.0%
  • CAND_IND90.0%
  • CAND_IND100.0%
  • PAN_PRI_PRD0.0%
Results for event-ebe38a5b047029b9ddb5886a
Label / candidateParty codeVotesShareSeatsStatus
PTmexico/S3e6fc03ad5/20212,64120.7%UnknownRecorded
PVEMmexico/S3e6fc03ad5/20211,72813.5%UnknownRecorded
PANmexico/S3e6fc03ad5/20211,44311.3%UnknownRecorded
PCHUmexico/S3e6fc03ad5/20211,31710.3%UnknownRecorded
PESmexico/S3e6fc03ad5/20211,2249.6%UnknownRecorded
MORENAmexico/S3e6fc03ad5/20211,1238.8%UnknownRecorded
PMCHmexico/S3e6fc03ad5/20211,0468.2%UnknownRecorded
FXMmexico/S3e6fc03ad5/20215013.9%UnknownRecorded
PRImexico/S3e6fc03ad5/20214503.5%UnknownRecorded
RSPmexico/S3e6fc03ad5/20213462.7%UnknownRecorded
MCmexico/S3e6fc03ad5/20213212.5%UnknownRecorded
PNAmexico/S3e6fc03ad5/20211541.2%UnknownRecorded
PPCHmexico/S3e6fc03ad5/20211291%UnknownRecorded
PRDmexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND1mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND2mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND3mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND4mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND5mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND6mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND7mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND8mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND9mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
CAND_IND10mexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded
PAN_PRI_PRDmexico/S3e6fc03ad5/20210 (recorded zero)0% (recorded zero)UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PCU31.7%
  • MVC27.2%
  • MC19.1%
  • PT_MORENA_ES11.9%
  • PRI4.8%
  • PANAL1.3%
  • PVEM0.6%
Results for event-ae63a9e48a55dc19b101501e
Label / candidateParty codeVotesShareSeatsStatus
PCUmexico/S4182be81c1/20184,02631.7%UnknownRecorded
MVCmexico/S4182be81c1/20183,46427.2%UnknownRecorded
MCmexico/S4182be81c1/20182,43019.1%UnknownRecorded
PT_MORENA_ESmexico/S4182be81c1/20181,51811.9%UnknownRecorded
PRImexico/S4182be81c1/20186134.8%UnknownRecorded
PANALmexico/S4182be81c1/20181711.3%UnknownRecorded
PVEMmexico/S4182be81c1/2018750.6%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

70.610–100 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=5.361269450007704, oldest_gap=4.570220378954218, previous_gap=7.349271512517104

pedersen volatility

Provisional volatility

26.82percentage 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=[[0,0,0,25.22723771375751,15.21337236173163,2.264674164227392,30.588507163765215,26.706208596518252],[11.615551799082347,3.622313450857281,0,21.258955163809063,13.909683651291958,2.5839169282781937,9.039684456250503,37.969894550430645],[0,4.984955680247214,0,0,0.6099048548426446,19.760917296901685,0,74.64422216800845]]

pedersen volatility

Provisional volatility

55.21percentage 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=[[0,0,0,25.22723771375751,15.21337236173163,2.264674164227392,30.588507163765215,26.706208596518252],[11.615551799082347,3.622313450857281,0,21.258955163809063,13.909683651291958,2.5839169282781937,9.039684456250503,37.969894550430645],[0,4.984955680247214,0,0,0.6099048548426446,19.760917296901685,0,74.64422216800845]]

pedersen volatility

Provisional volatility

41.02percentage 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=[[0,0,0,25.22723771375751,15.21337236173163,2.264674164227392,30.588507163765215,26.706208596518252],[11.615551799082347,3.622313450857281,0,21.258955163809063,13.909683651291958,2.5839169282781937,9.039684456250503,37.969894550430645],[0,4.984955680247214,0,0,0.6099048548426446,19.760917296901685,0,74.64422216800845]]

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. “MAZATAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-7-54. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sec66197e61, mexico--S3e6fc03ad5, mexico--S4182be81c1.