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

Office briefing

AQUILES SERDAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · AQUILES SERDAN / CHIHUAHUA · municipal · Municipal governmentMX-M-8-4

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
AQUILES SERDAN / CHIHUAHUA
Next election
2027-06-06
Linked upcoming event
next-6b555aac789e2d48ac5dbb05
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_PRD57.2%
  • PT_MORENA21.4%
  • PVEM11.1%
  • MC3.3%
  • MRCH1.5%
Results for event-73eb033e6f1df3e201361fb7
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/Sce984afda7/20244,13057.2%UnknownRecorded
PT_MORENAmexico/Sce984afda7/20241,54821.4%UnknownRecorded
PVEMmexico/Sce984afda7/202480511.1%UnknownRecorded
MCmexico/Sce984afda7/20242403.3%UnknownRecorded
MRCHmexico/Sce984afda7/20241111.5%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PRI47.9%
  • PAN_PRD15.7%
  • PT_MORENA_NACH14.5%
  • RSP8.5%
  • MC4.2%
  • PES3.7%
  • PVEM1.6%
  • FXM0.2%
Results for event-6463861b06e6b6a8248bd2fd
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S25cfb7db7c/20212,90647.9%UnknownRecorded
PAN_PRDmexico/S25cfb7db7c/202195515.7%UnknownRecorded
PT_MORENA_NACHmexico/S25cfb7db7c/202188014.5%UnknownRecorded
RSPmexico/S25cfb7db7c/20215188.5%UnknownRecorded
MCmexico/S25cfb7db7c/20212564.2%UnknownRecorded
PESmexico/S25cfb7db7c/20212243.7%UnknownRecorded
PVEMmexico/S25cfb7db7c/2021971.6%UnknownRecorded
FXMmexico/S25cfb7db7c/2021120.2%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PRI50.4%
  • PAN_MC20.3%
  • PT_MORENA_ES16.5%
  • PRD5.8%
  • PVEM1.8%
  • PANAL1.4%
Results for event-cf567e5342f45f377b68246e
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/S7811da3819/20183,10550.4%UnknownRecorded
PAN_MCmexico/S7811da3819/20181,25220.3%UnknownRecorded
PT_MORENA_ESmexico/S7811da3819/20181,01616.5%UnknownRecorded
PRDmexico/S7811da3819/20183545.8%UnknownRecorded
PVEMmexico/S7811da3819/20181131.8%UnknownRecorded
PANALmexico/S7811da3819/2018891.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

0 (recorded zero)0–100 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=37.781679836113554, oldest_gap=31.25316242199359, previous_gap=33.36183310533516

pedersen volatility

Provisional volatility

50.56percentage 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=[[0,0,0,0,11.779338601112087,3.5118525021949076,0,84.708808896693],[0,49.6922024623803,0,0,1.658686730506156,4.377564979480164,0,44.27154582763338],[0,52.36970821386406,5.9706527238994775,0,1.905886321470737,0,0,39.75375274076573]]

pedersen volatility

Provisional volatility

8.9percentage 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=[[0,0,0,0,11.779338601112087,3.5118525021949076,0,84.708808896693],[0,49.6922024623803,0,0,1.658686730506156,4.377564979480164,0,44.27154582763338],[0,52.36970821386406,5.9706527238994775,0,1.905886321470737,0,0,39.75375274076573]]

pedersen volatility

Provisional volatility

29.73percentage 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=[[0,0,0,0,11.779338601112087,3.5118525021949076,0,84.708808896693],[0,49.6922024623803,0,0,1.658686730506156,4.377564979480164,0,44.27154582763338],[0,52.36970821386406,5.9706527238994775,0,1.905886321470737,0,0,39.75375274076573]]

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. “AQUILES SERDAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-8-4. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sce984afda7, mexico--S25cfb7db7c, mexico--S7811da3819.