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

Office briefing

MADERA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · MADERA / CHIHUAHUA · municipal · Municipal governmentMX-M-8-40

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
MADERA / CHIHUAHUA
Next election
2027-06-06
Linked upcoming event
next-e2d75812634e9b905b778374
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

  • MORENA31.7%
  • C_PAN_PRI_PRD31.1%
  • MRCH29.0%
  • MC3.9%
Results for event-de78525d2224e78557cef696
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S4952543e7c/20243,75631.7%UnknownRecorded
C_PAN_PRI_PRDmexico/S4952543e7c/20243,69331.1%UnknownRecorded
MRCHmexico/S4952543e7c/20243,44029%UnknownRecorded
MCmexico/S4952543e7c/20244643.9%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRD47.8%
  • PT_MORENA_NACH31.7%
  • RSP10.9%
  • PRI5.4%
  • MC1.0%
Results for event-a7c30c87147cad749bb1f0e7
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRDmexico/Sb405c7f3b9/20214,88247.8%UnknownRecorded
PT_MORENA_NACHmexico/Sb405c7f3b9/20213,23531.7%UnknownRecorded
RSPmexico/Sb405c7f3b9/20211,11110.9%UnknownRecorded
PRImexico/Sb405c7f3b9/20215485.4%UnknownRecorded
MCmexico/Sb405c7f3b9/2021991%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_MC55.7%
  • PT_MORENA_ES13.9%
  • PANAL12.7%
  • PRI12.4%
Results for event-806bde972fda3df489921c35
Label / candidateParty codeVotesShareSeatsStatus
PAN_MCmexico/S12c6c7be71/20186,09655.7%UnknownRecorded
PT_MORENA_ESmexico/S12c6c7be71/20181,51813.9%UnknownRecorded
PANALmexico/S12c6c7be71/20181,39112.7%UnknownRecorded
PRImexico/S12c6c7be71/20181,35712.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

51.230–100 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=0.5549194045626678, oldest_gap=44.18066010422698, previous_gap=16.67848101265823

pedersen volatility

Provisional volatility

36.17percentage 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: Latest interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[[0,0,0,0,0,4.087025455826653,33.08376640535541,62.82920813881793],[0,5.549367088607595,0,0,0,1.0025316455696203,0,93.44810126582279],[0,13.095927427137617,0,0,0,0,0,86.90407257286239]]

pedersen volatility

Provisional volatility

7.55percentage 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=[[0,0,0,0,0,4.087025455826653,33.08376640535541,62.82920813881793],[0,5.549367088607595,0,0,0,1.0025316455696203,0,93.44810126582279],[0,13.095927427137617,0,0,0,0,0,86.90407257286239]]

pedersen volatility

Provisional volatility

21.86percentage 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=[[0,0,0,0,0,4.087025455826653,33.08376640535541,62.82920813881793],[0,5.549367088607595,0,0,0,1.0025316455696203,0,93.44810126582279],[0,13.095927427137617,0,0,0,0,0,86.90407257286239]]

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. “MADERA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-8-40. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S4952543e7c, mexico--Sb405c7f3b9, mexico--S12c6c7be71.