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

Office briefing

SANTIAGO JAMILTEPEC — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SANTIAGO JAMILTEPEC / OAXACA · municipal · Municipal governmentMX-M-20-468

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
SANTIAGO JAMILTEPEC / OAXACA
Next election
2027-06-06
Linked upcoming event
next-414096d9d85efdfaf207f6b3
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

  • PVEM40.3%
  • NAO31.9%
  • MORENA18.4%
  • PUP2.1%
  • C_PUP_NAO_21.0%
  • PT0.9%
  • PRI0.8%
  • PRD0.8%
  • MUJER0.2%
Results for event-6c89522c2f95725630dbd360
Label / candidateParty codeVotesShareSeatsStatus
PVEMmexico/Scaa4516778/20244,18340.3%UnknownRecorded
NAOmexico/Scaa4516778/20243,30731.9%UnknownRecorded
MORENAmexico/Scaa4516778/20241,90818.4%UnknownRecorded
PUPmexico/Scaa4516778/20242202.1%UnknownRecorded
C_PUP_NAO_2mexico/Scaa4516778/20241041%UnknownRecorded
PTmexico/Scaa4516778/2024960.9%UnknownRecorded
PRImexico/Scaa4516778/2024800.8%UnknownRecorded
PRDmexico/Scaa4516778/2024800.8%UnknownRecorded
MUJERmexico/Scaa4516778/2024210.2%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD51.3%
  • MORENA45.1%
  • PT1.1%
  • PES1.1%
Results for event-e6bc1326b44cff1f6be1cda4
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/S976a99b027/20215,69551.3%UnknownRecorded
MORENAmexico/S976a99b027/20215,00345.1%UnknownRecorded
PTmexico/S976a99b027/20211201.1%UnknownRecorded
PESmexico/S976a99b027/20211181.1%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI_PVEM_PANAL45.5%
  • PT_MORENA_ES38.6%
  • PAN_PRD_MC2.8%
Results for event-1d09a579c8c03c0ed8182c85
Label / candidateParty codeVotesShareSeatsStatus
PRI_PVEM_PANALmexico/Sd4694608aa/20184,79645.5%UnknownRecorded
PT_MORENA_ESmexico/Sd4694608aa/20184,06438.6%UnknownRecorded
PAN_PRD_MCmexico/Sd4694608aa/20182952.8%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

60.230–100 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=8.760876087608764, oldest_gap=7.995630802839983, previous_gap=6.32772494513533

pedersen volatility

Provisional volatility

43.43percentage 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=[[0,0.8000800080008,0.8000800080008,0.9600960096009601,41.83418341834184,0,19.08190819081908,36.52365236523652],[0,0,0,1.097293343087052,0,0,45.747988295537674,53.154718361375274],null]

pedersen volatility

Withheld volatility

Unknownpercentage 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Previous interval, vectors=[[0,0.8000800080008,0.8000800080008,0.9600960096009601,41.83418341834184,0,19.08190819081908,36.52365236523652],[0,0,0,1.097293343087052,0,0,45.747988295537674,53.154718361375274],null]

pedersen volatility

Withheld volatility

Unknownpercentage 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,0.8000800080008,0.8000800080008,0.9600960096009601,41.83418341834184,0,19.08190819081908,36.52365236523652],[0,0,0,1.097293343087052,0,0,45.747988295537674,53.154718361375274],null]

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. “SANTIAGO JAMILTEPEC — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-468. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Scaa4516778, mexico--S976a99b027, mexico--Sd4694608aa.