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

Office briefing

SAN JUAN BAUTISTA LO DE SOTO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SAN JUAN BAUTISTA LO DE SOTO / OAXACA · municipal · Municipal governmentMX-M-20-178

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
SAN JUAN BAUTISTA LO DE SOTO / OAXACA
Next election
2027-06-06
Linked upcoming event
next-4456a05927e2a4e5f3816357
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

  • MORENA30.1%
  • PVEM26.9%
  • PAN23.1%
  • NAO12.9%
  • PRD2.4%
  • MUJER0.6%
  • PT0.3%
Results for event-44ab16f2b6d3fc3484518bb4
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Sdde1159207/202439730.1%UnknownRecorded
PVEMmexico/Sdde1159207/202435526.9%UnknownRecorded
PANmexico/Sdde1159207/202430523.1%UnknownRecorded
NAOmexico/Sdde1159207/202417012.9%UnknownRecorded
PRDmexico/Sdde1159207/2024322.4%UnknownRecorded
MUJERmexico/Sdde1159207/202480.6%UnknownRecorded
PTmexico/Sdde1159207/202440.3%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • FXM29.3%
  • PUP26.1%
  • MORENA24.7%
  • PT14.4%
  • MC0.8%
  • PAN_PRI_PRD0.7%
  • PES0.6%
  • PVEM0.3%
  • NAO0.1%
Results for event-7c385218223777fa017bc089
Label / candidateParty codeVotesShareSeatsStatus
FXMmexico/Sf8c639c193/202141129.3%UnknownRecorded
PUPmexico/Sf8c639c193/202136526.1%UnknownRecorded
MORENAmexico/Sf8c639c193/202134624.7%UnknownRecorded
PTmexico/Sf8c639c193/202120214.4%UnknownRecorded
MCmexico/Sf8c639c193/2021110.8%UnknownRecorded
PAN_PRI_PRDmexico/Sf8c639c193/2021100.7%UnknownRecorded
PESmexico/Sf8c639c193/202180.6%UnknownRecorded
PVEMmexico/Sf8c639c193/202140.3%UnknownRecorded
NAOmexico/Sf8c639c193/202110.1%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PT_MORENA_ES20.3%
  • PMR18.6%
  • PRI17.1%
  • PAN_PRD_MC16.7%
  • PUP15.3%
  • PANAL7.5%
Results for event-509952640410ab152177971f
Label / candidateParty codeVotesShareSeatsStatus
PT_MORENA_ESmexico/S3f985e3ea5/201831820.3%UnknownRecorded
PMRmexico/S3f985e3ea5/201829118.6%UnknownRecorded
PRImexico/S3f985e3ea5/201826817.1%UnknownRecorded
PAN_PRD_MCmexico/S3f985e3ea5/201826216.7%UnknownRecorded
PUPmexico/S3f985e3ea5/201824015.3%UnknownRecorded
PANALmexico/S3f985e3ea5/20181187.5%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

84.10–100 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=3.3044846577498035, oldest_gap=1.8036072144288582, previous_gap=3.3873343151693653

pedersen volatility

Provisional volatility

59.91percentage 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=[[23.996852871754523,0,2.5177025963808024,0.3147128245476003,27.930763178599527,0,31.23524783634933,14.004720692368213],[0,0,0,14.874815905743741,0.29455081001472755,0.8100147275405007,25.47864506627393,58.54197349042709],[0,17.90247160988644,0,0,0,0,0,82.09752839011355]]

pedersen volatility

Provisional volatility

41.46percentage 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=[[23.996852871754523,0,2.5177025963808024,0.3147128245476003,27.930763178599527,0,31.23524783634933,14.004720692368213],[0,0,0,14.874815905743741,0.29455081001472755,0.8100147275405007,25.47864506627393,58.54197349042709],[0,17.90247160988644,0,0,0,0,0,82.09752839011355]]

pedersen volatility

Provisional volatility

50.68percentage 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=[[23.996852871754523,0,2.5177025963808024,0.3147128245476003,27.930763178599527,0,31.23524783634933,14.004720692368213],[0,0,0,14.874815905743741,0.29455081001472755,0.8100147275405007,25.47864506627393,58.54197349042709],[0,17.90247160988644,0,0,0,0,0,82.09752839011355]]

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. “SAN JUAN BAUTISTA LO DE SOTO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-20-178. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sdde1159207, mexico--Sf8c639c193, mexico--S3f985e3ea5.