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

Office briefing

MAZATAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · MAZATAN / SONORA · municipal · Municipal governmentMX-M-26-50

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
MAZATAN / SONORA
Next election
2027-06-06
Linked upcoming event
next-11885597c57a4a6eb59600a5
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_PES32.8%
  • PS32.2%
  • MC27.9%
  • PAN_PRI_PRD5.1%
Results for event-1d60e70d055c341dc9f4aae5
Label / candidateParty codeVotesShareSeatsStatus
C_MORENA_PT_PVEM_NAS_PESmexico/S80e2003242/202443032.8%UnknownRecorded
PSmexico/S80e2003242/202442132.2%UnknownRecorded
MCmexico/S80e2003242/202436527.9%UnknownRecorded
PAN_PRI_PRDmexico/S80e2003242/2024675.1%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MC43.7%
  • PAN_PRI_PRD30.9%
  • MORENA25.1%
Results for event-15f25f20441fb1914f149ceb
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/S5708da72d8/202155143.7%UnknownRecorded
PAN_PRI_PRDmexico/S5708da72d8/202139030.9%UnknownRecorded
MORENAmexico/S5708da72d8/202131625.1%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD43.0%
  • PRI_PVEM_PANAL40.9%
  • PT_MORENA_ES14.5%
Results for event-834b423c4c8e1071aef9d7a9
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRDmexico/S8aa1d7634f/201852143%UnknownRecorded
PRI_PVEM_PANALmexico/S8aa1d7634f/201849540.9%UnknownRecorded
PT_MORENA_ESmexico/S8aa1d7634f/201817614.5%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

77.590–100 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=0.7014809041309391, oldest_gap=2.181208053691279, previous_gap=12.808273667462213

pedersen volatility

Provisional volatility

40.52percentage 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=[[0,0,0,0,0,28.448947778643802,0,71.55105222135619],[0,0,0,0,0,43.83452665075577,25.139220365950678,31.026252983293556],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=[[0,0,0,0,0,28.448947778643802,0,71.55105222135619],[0,0,0,0,0,43.83452665075577,25.139220365950678,31.026252983293556],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=[[0,0,0,0,0,28.448947778643802,0,71.55105222135619],[0,0,0,0,0,43.83452665075577,25.139220365950678,31.026252983293556],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. “MAZATAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-26-50. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S80e2003242, mexico--S5708da72d8, mexico--S8aa1d7634f.