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

Office briefing

URES — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · URES / SONORA · municipal · Municipal governmentMX-M-26-57

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
URES / SONORA
Next election
2027-06-06
Linked upcoming event
next-1c0aba0d810497a574add894
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

  • PAN_PRI_PRD48.2%
  • C_MORENA_PT_PVEM_NAS_PES44.7%
  • MC1.1%
  • PS0.3%
Results for event-9596bac42a45a5751dae51ba
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/S8362ea01e0/20242,82948.2%UnknownRecorded
C_MORENA_PT_PVEM_NAS_PESmexico/S8362ea01e0/20242,62644.7%UnknownRecorded
MCmexico/S8362ea01e0/2024641.1%UnknownRecorded
PSmexico/S8362ea01e0/2024200.3%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MORENA46.0%
  • PAN_PRI_PRD44.9%
  • MC5.0%
  • FXM1.7%
Results for event-78aff0074c9387c6818fc0f5
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S7f7accc441/20212,71746%UnknownRecorded
PAN_PRI_PRDmexico/S7f7accc441/20212,65244.9%UnknownRecorded
MCmexico/S7f7accc441/20212955%UnknownRecorded
FXMmexico/S7f7accc441/20211011.7%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD40.0%
  • PRI_PVEM_PANAL32.1%
  • PT_MORENA_ES18.0%
  • MC3.9%
  • MAS2.3%
Results for event-f22ab270ea5838c0320bfa3b
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRDmexico/S857cdac32c/20182,32440%UnknownRecorded
PRI_PVEM_PANALmexico/S857cdac32c/20181,86832.1%UnknownRecorded
PT_MORENA_ESmexico/S857cdac32c/20181,04518%UnknownRecorded
MCmexico/S857cdac32c/20182283.9%UnknownRecorded
MASmexico/S857cdac32c/20181332.3%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

83.240–100 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=3.6649214659685825, oldest_gap=8.145766345123263, previous_gap=1.1274934952298352

pedersen volatility

Provisional volatility

51.09percentage 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=[[0,0,0,0,0,1.155443220797978,0,98.84455677920202],[0,0,0,0,0,5.117085862966175,47.129228100607115,47.753686036426714],[0,0,0,0,0,4.072883172561629,0,95.92711682743837]]

pedersen volatility

Provisional volatility

48.17percentage 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=[[0,0,0,0,0,1.155443220797978,0,98.84455677920202],[0,0,0,0,0,5.117085862966175,47.129228100607115,47.753686036426714],[0,0,0,0,0,4.072883172561629,0,95.92711682743837]]

pedersen volatility

Provisional volatility

49.63percentage 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=[[0,0,0,0,0,1.155443220797978,0,98.84455677920202],[0,0,0,0,0,5.117085862966175,47.129228100607115,47.753686036426714],[0,0,0,0,0,4.072883172561629,0,95.92711682743837]]

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. “URES — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-26-57. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S8362ea01e0, mexico--S7f7accc441, mexico--S857cdac32c.