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

Office briefing

NACORI CHICO — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · NACORI CHICO / SONORA · municipal · Municipal governmentMX-M-26-28

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
NACORI CHICO / SONORA
Next election
2027-06-06
Linked upcoming event
next-8b23cded6407e2be912fc75a
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_MORENA_PT_PVEM_NAS_PES48.2%
  • MC28.7%
  • PAN_PRI_PRD20.7%
  • PS0.1%
Results for event-20669ab3330393f6042c5d5b
Label / candidateParty codeVotesShareSeatsStatus
C_MORENA_PT_PVEM_NAS_PESmexico/S2d3eda4942/202455048.2%UnknownRecorded
MCmexico/S2d3eda4942/202432728.7%UnknownRecorded
PAN_PRI_PRDmexico/S2d3eda4942/202423620.7%UnknownRecorded
PSmexico/S2d3eda4942/202410.1%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MC40.9%
  • PRI30.7%
  • PT26.8%
  • PAN0.3%
Results for event-f11c0e9f52a1bc968be2dc8f
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/S7fd62190b9/202146840.9%UnknownRecorded
PRImexico/S7fd62190b9/202135130.7%UnknownRecorded
PTmexico/S7fd62190b9/202130726.8%UnknownRecorded
PANmexico/S7fd62190b9/202130.3%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • MC35.0%
  • PT_MORENA_ES21.1%
  • PAN_PRD17.1%
  • CAND_IND415.6%
  • PRI_PVEM_PANAL8.3%
Results for event-de21b532e767c0db15f2ef6e
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/Sbca0cdff01/201845435%UnknownRecorded
PT_MORENA_ESmexico/Sbca0cdff01/201827321.1%UnknownRecorded
PAN_PRDmexico/Sbca0cdff01/201822117.1%UnknownRecorded
CAND_IND4mexico/Sbca0cdff01/201820215.6%UnknownRecorded
PRI_PVEM_PANALmexico/Sbca0cdff01/20181078.3%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

17.20–100 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=20.017953321364452, oldest_gap=14.399363564041373, previous_gap=10.36315323294951

pedersen volatility

Provisional volatility

70.65percentage 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=[[0,0,0,0,0,29.353680430879713,0,70.6463195691203],[0.2657218777679362,31.08945969884854,0,27.192205491585472,0,41.45261293179805,0,0],[0,0,0,0,0,36.11774065234686,0,63.88225934765314]]

pedersen volatility

Provisional volatility

63.88percentage 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=[[0,0,0,0,0,29.353680430879713,0,70.6463195691203],[0.2657218777679362,31.08945969884854,0,27.192205491585472,0,41.45261293179805,0,0],[0,0,0,0,0,36.11774065234686,0,63.88225934765314]]

pedersen volatility

Provisional volatility

67.26percentage 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=[[0,0,0,0,0,29.353680430879713,0,70.6463195691203],[0.2657218777679362,31.08945969884854,0,27.192205491585472,0,41.45261293179805,0,0],[0,0,0,0,0,36.11774065234686,0,63.88225934765314]]

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. “NACORI CHICO — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-26-28. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S2d3eda4942, mexico--S7fd62190b9, mexico--Sbca0cdff01.