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

Office briefing

SANTA MARIA JALAPA DEL MARQUES — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SANTA MARIA JALAPA DEL MARQUES / OAXACA · municipal · Municipal governmentMX-M-20-419

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
SANTA MARIA JALAPA DEL MARQUES / OAXACA
Next election
2027-06-06
Linked upcoming event
next-c7566fd0a999659844356aed
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

  • MORENA50.1%
  • PVEM29.0%
  • PRI10.1%
  • PT6.9%
  • MUJER0.5%
  • PRD0.3%
  • PAN0.1%
  • FXMO0.1%
  • C_PAN_PRI_PRD0.1%
Results for event-c4c7e256511d5505ca27c165
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Sbb0c603ce3/20243,76450.1%UnknownRecorded
PVEMmexico/Sbb0c603ce3/20242,18129%UnknownRecorded
PRImexico/Sbb0c603ce3/202476110.1%UnknownRecorded
PTmexico/Sbb0c603ce3/20245216.9%UnknownRecorded
MUJERmexico/Sbb0c603ce3/2024350.5%UnknownRecorded
PRDmexico/Sbb0c603ce3/2024230.3%UnknownRecorded
PANmexico/Sbb0c603ce3/2024110.1%UnknownRecorded
FXMOmexico/Sbb0c603ce3/202490.1%UnknownRecorded
C_PAN_PRI_PRDmexico/Sbb0c603ce3/202490.1%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD29.5%
  • MORENA25.6%
  • PVEM17.1%
  • CAND_IND1415.2%
  • PES3.5%
  • PT3.4%
  • RSP2.1%
  • PUP0.7%
  • MC0.2%
  • NAO0.0%
Results for event-19494a7e2c9f97758c7f8408
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/S64aac04ca6/20212,07129.5%UnknownRecorded
MORENAmexico/S64aac04ca6/20211,79525.6%UnknownRecorded
PVEMmexico/S64aac04ca6/20211,19917.1%UnknownRecorded
CAND_IND14mexico/S64aac04ca6/20211,06915.2%UnknownRecorded
PESmexico/S64aac04ca6/20212493.5%UnknownRecorded
PTmexico/S64aac04ca6/20212363.4%UnknownRecorded
RSPmexico/S64aac04ca6/20211482.1%UnknownRecorded
PUPmexico/S64aac04ca6/2021480.7%UnknownRecorded
MCmexico/S64aac04ca6/2021160.2%UnknownRecorded
NAOmexico/S64aac04ca6/202130%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI_PANAL31.9%
  • PT_MORENA_ES30.3%
  • PVEM26.2%
  • PSD3.7%
  • PUP3.4%
  • PAN_PRD_MC1.3%
Results for event-7d9eb6d403942c4fa1a4a7ac
Label / candidateParty codeVotesShareSeatsStatus
PRI_PANALmexico/Sc40bf190a0/20182,23431.9%UnknownRecorded
PT_MORENA_ESmexico/Sc40bf190a0/20182,11730.3%UnknownRecorded
PVEMmexico/Sc40bf190a0/20181,83226.2%UnknownRecorded
PSDmexico/Sc40bf190a0/20182623.7%UnknownRecorded
PUPmexico/Sc40bf190a0/20182373.4%UnknownRecorded
PAN_PRD_MCmexico/Sc40bf190a0/2018911.3%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

28.150–100 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=21.64342357123325, oldest_gap=1.7274472168905959, previous_gap=4.038630377524143

pedersen volatility

Provisional volatility

52.01percentage 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: Latest interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[[0.1503964998632759,10.404703308722997,0.31446540880503143,7.123325129887887,29.819524200164068,0,51.46294777139732,0.7246376811594203],[0,0,0,3.453321627158326,17.544629792215392,0.23412350014632718,26.265730172666082,52.50219490781387],[0,0,0,0,27.048575225158718,0,0,72.95142477484129]]

pedersen volatility

Provisional volatility

29.95percentage 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=[[0.1503964998632759,10.404703308722997,0.31446540880503143,7.123325129887887,29.819524200164068,0,51.46294777139732,0.7246376811594203],[0,0,0,3.453321627158326,17.544629792215392,0.23412350014632718,26.265730172666082,52.50219490781387],[0,0,0,0,27.048575225158718,0,0,72.95142477484129]]

pedersen volatility

Provisional volatility

40.98percentage 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=[[0.1503964998632759,10.404703308722997,0.31446540880503143,7.123325129887887,29.819524200164068,0,51.46294777139732,0.7246376811594203],[0,0,0,3.453321627158326,17.544629792215392,0.23412350014632718,26.265730172666082,52.50219490781387],[0,0,0,0,27.048575225158718,0,0,72.95142477484129]]

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. “SANTA MARIA JALAPA DEL MARQUES — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-419. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sbb0c603ce3, mexico--S64aac04ca6, mexico--Sc40bf190a0.