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

Office briefing

MIAHUATLAN DE PORFIRIO DIAZ — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · MIAHUATLAN DE PORFIRIO DIAZ / OAXACA · municipal · Municipal governmentMX-M-20-59

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
MIAHUATLAN DE PORFIRIO DIAZ / OAXACA
Next election
2027-06-06
Linked upcoming event
next-d4f0e72582c139f5a9f9e413
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_PVEM_MORENA_NAO_FXMO41.6%
  • PUP39.0%
  • PT10.3%
  • MC2.4%
  • C_PAN_PRI_PRD1.9%
  • MUJER0.4%
Results for event-c85a252e022590fde147d9a2
Label / candidateParty codeVotesShareSeatsStatus
C_PVEM_MORENA_NAO_FXMOmexico/Sa598543839/20249,42641.6%UnknownRecorded
PUPmexico/Sa598543839/20248,84539%UnknownRecorded
PTmexico/Sa598543839/20242,33210.3%UnknownRecorded
MCmexico/Sa598543839/20245462.4%UnknownRecorded
C_PAN_PRI_PRDmexico/Sa598543839/20244411.9%UnknownRecorded
MUJERmexico/Sa598543839/2024890.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PUP27.1%
  • PAN_NAO_326.0%
  • PRI_PRD_419.2%
  • MORENA13.2%
  • CAND_IND203.1%
  • CAND_IND213.0%
  • PT2.2%
  • PVEM0.9%
  • FXM0.7%
  • PES0.5%
  • MC0.4%
Results for event-68b12c70e8679d950c1c2d8d
Label / candidateParty codeVotesShareSeatsStatus
PUPmexico/Sc162c2596a/20215,45627.1%UnknownRecorded
PAN_NAO_3mexico/Sc162c2596a/20215,23926%UnknownRecorded
PRI_PRD_4mexico/Sc162c2596a/20213,85919.2%UnknownRecorded
MORENAmexico/Sc162c2596a/20212,66013.2%UnknownRecorded
CAND_IND20mexico/Sc162c2596a/20216223.1%UnknownRecorded
CAND_IND21mexico/Sc162c2596a/20216083%UnknownRecorded
PTmexico/Sc162c2596a/20214402.2%UnknownRecorded
PVEMmexico/Sc162c2596a/20211880.9%UnknownRecorded
FXMmexico/Sc162c2596a/20211440.7%UnknownRecorded
PESmexico/Sc162c2596a/20211090.5%UnknownRecorded
MCmexico/Sc162c2596a/2021870.4%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI_PVEM26.0%
  • PUP22.5%
  • PANAL20.8%
  • PT_MORENA_ES16.1%
  • PAN_PRD_MC9.3%
  • PSD0.2%
Results for event-dee98cbf4956ed72eed46752
Label / candidateParty codeVotesShareSeatsStatus
PRI_PVEMmexico/S68e1cd47fb/20185,67926%UnknownRecorded
PUPmexico/S68e1cd47fb/20184,91322.5%UnknownRecorded
PANALmexico/S68e1cd47fb/20184,54120.8%UnknownRecorded
PT_MORENA_ESmexico/S68e1cd47fb/20183,52016.1%UnknownRecorded
PAN_PRD_MCmexico/S68e1cd47fb/20182,0329.3%UnknownRecorded
PSDmexico/S68e1cd47fb/2018530.2%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

88.440–100 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=2.6800129157248946, oldest_gap=3.69370238210049, previous_gap=1.1178652379971155

pedersen volatility

Provisional volatility

14.67percentage 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=[[0,0,0,10.756953734028322,0,2.5185663545366483,0,86.72447991143503],[0,0,0,2.266639192252215,0.9684731094168556,0.4481763857407789,13.702864207706574,82.61384710488358],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=[[0,0,0,10.756953734028322,0,2.5185663545366483,0,86.72447991143503],[0,0,0,2.266639192252215,0.9684731094168556,0.4481763857407789,13.702864207706574,82.61384710488358],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=[[0,0,0,10.756953734028322,0,2.5185663545366483,0,86.72447991143503],[0,0,0,2.266639192252215,0.9684731094168556,0.4481763857407789,13.702864207706574,82.61384710488358],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. “MIAHUATLAN DE PORFIRIO DIAZ — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-59. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sa598543839, mexico--Sc162c2596a, mexico--S68e1cd47fb.