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

Office briefing

SANTIAGO PINOTEPA NACIONAL — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SANTIAGO PINOTEPA NACIONAL / OAXACA · municipal · Municipal governmentMX-M-20-484

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 PINOTEPA NACIONAL / OAXACA
Next election
2027-06-06
Linked upcoming event
next-4ff20c2cb03fd266fd86ba86
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

  • C_PRI_PRD_138.6%
  • C_MORENA_FXMO_324.1%
  • PVEM10.4%
  • NAO7.1%
  • PUP5.6%
  • MC5.2%
  • PT4.1%
  • MUJER0.3%
Results for event-aa8b1600990fb62b46cb2d94
Label / candidateParty codeVotesShareSeatsStatus
C_PRI_PRD_1mexico/Sbe7a7d5998/20249,07638.6%UnknownRecorded
C_MORENA_FXMO_3mexico/Sbe7a7d5998/20245,67124.1%UnknownRecorded
PVEMmexico/Sbe7a7d5998/20242,43510.4%UnknownRecorded
NAOmexico/Sbe7a7d5998/20241,6767.1%UnknownRecorded
PUPmexico/Sbe7a7d5998/20241,3215.6%UnknownRecorded
MCmexico/Sbe7a7d5998/20241,2315.2%UnknownRecorded
PTmexico/Sbe7a7d5998/20249614.1%UnknownRecorded
MUJERmexico/Sbe7a7d5998/2024730.3%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MORENA34.6%
  • PRD29.4%
  • PRI22.3%
  • MC3.0%
  • PUP2.4%
  • FXM1.7%
  • RSP1.0%
  • PAN1.0%
  • PVEM0.8%
  • PES0.6%
  • PT0.5%
  • NAO0.4%
Results for event-cc47fec65132b1de499116b7
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S936e92d76e/20218,67434.6%UnknownRecorded
PRDmexico/S936e92d76e/20217,38329.4%UnknownRecorded
PRImexico/S936e92d76e/20215,58522.3%UnknownRecorded
MCmexico/S936e92d76e/20217503%UnknownRecorded
PUPmexico/S936e92d76e/20215952.4%UnknownRecorded
FXMmexico/S936e92d76e/20214181.7%UnknownRecorded
RSPmexico/S936e92d76e/20212591%UnknownRecorded
PANmexico/S936e92d76e/20212451%UnknownRecorded
PVEMmexico/S936e92d76e/20212070.8%UnknownRecorded
PESmexico/S936e92d76e/20211420.6%UnknownRecorded
PTmexico/S936e92d76e/20211320.5%UnknownRecorded
NAOmexico/S936e92d76e/20211030.4%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD_MC36.9%
  • PT_MORENA_ES34.2%
  • PRI_PVEM_PANAL24.6%
  • PUP0.7%
  • PSD0.1%
Results for event-df4fba2027ea9b7c12956d86
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRD_MCmexico/Sd5154c82d0/20189,41636.9%UnknownRecorded
PT_MORENA_ESmexico/Sd5154c82d0/20188,72334.2%UnknownRecorded
PRI_PVEM_PANALmexico/Sd5154c82d0/20186,28024.6%UnknownRecorded
PUPmexico/Sd5154c82d0/20181850.7%UnknownRecorded
PSDmexico/Sd5154c82d0/2018310.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

45.170–100 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=15.171092496881126, oldest_gap=2.8130708341790083, previous_gap=5.270893724737675

pedersen volatility

Provisional volatility

89.36percentage 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=[[0,0,0,4.281767955801105,10.849224737123507,5.484762074496524,0,79.38424523257886],[1.0002857959416975,22.802433348303598,30.143306250765526,0.538929490058384,0.8451394275915568,3.0620993753317274,35.4141999755032,6.193606336504308],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=[[0,0,0,4.281767955801105,10.849224737123507,5.484762074496524,0,79.38424523257886],[1.0002857959416975,22.802433348303598,30.143306250765526,0.538929490058384,0.8451394275915568,3.0620993753317274,35.4141999755032,6.193606336504308],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=[[0,0,0,4.281767955801105,10.849224737123507,5.484762074496524,0,79.38424523257886],[1.0002857959416975,22.802433348303598,30.143306250765526,0.538929490058384,0.8451394275915568,3.0620993753317274,35.4141999755032,6.193606336504308],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 PINOTEPA NACIONAL — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-484. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sbe7a7d5998, mexico--S936e92d76e, mexico--Sd5154c82d0.