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

Office briefing

JUAN ALDAMA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · JUAN ALDAMA / ZACATECAS · municipal · Municipal governmentMX-M-32-22

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
JUAN ALDAMA / ZACATECAS
Next election
2027-06-06
Linked upcoming event
next-21098b8aa4bcf9f438537a26
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

  • PVEM_MORENA46.0%
  • PRI35.4%
  • PT9.2%
  • MC2.4%
  • NAZ2.2%
  • RPZ1.1%
  • PES0.9%
Results for event-ecba5a1fe397720bf407b592
Label / candidateParty codeVotesShareSeatsStatus
PVEM_MORENAmexico/S311f74d1bd/20244,51346%UnknownRecorded
PRImexico/S311f74d1bd/20243,47735.4%UnknownRecorded
PTmexico/S311f74d1bd/20249079.2%UnknownRecorded
MCmexico/S311f74d1bd/20242372.4%UnknownRecorded
NAZmexico/S311f74d1bd/20242172.2%UnknownRecorded
RPZmexico/S311f74d1bd/20241071.1%UnknownRecorded
PESmexico/S311f74d1bd/2024850.9%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PP33.9%
  • PAN_PRI_PRD23.3%
  • MORENA20.8%
  • PT11.0%
  • MC3.0%
  • PES1.7%
  • FXM1.4%
  • PANALZ0.9%
  • FAM0.4%
  • PVEM0.3%
  • PAZ0.2%
Results for event-2e09b603d8993a7354ac4d52
Label / candidateParty codeVotesShareSeatsStatus
PPmexico/S8a0211af68/20213,29833.9%UnknownRecorded
PAN_PRI_PRDmexico/S8a0211af68/20212,26823.3%UnknownRecorded
MORENAmexico/S8a0211af68/20212,02120.8%UnknownRecorded
PTmexico/S8a0211af68/20211,06911%UnknownRecorded
MCmexico/S8a0211af68/20212953%UnknownRecorded
PESmexico/S8a0211af68/20211691.7%UnknownRecorded
FXMmexico/S8a0211af68/20211351.4%UnknownRecorded
PANALZmexico/S8a0211af68/2021890.9%UnknownRecorded
FAMmexico/S8a0211af68/2021400.4%UnknownRecorded
PVEMmexico/S8a0211af68/2021250.3%UnknownRecorded
PAZmexico/S8a0211af68/2021200.2%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN_PRD_MC41.4%
  • PRI28.6%
  • PT_MORENA_ES17.2%
  • PAZ3.5%
  • CAND_IND42.8%
  • PANAL2.2%
  • CAND_IND50.8%
  • PVEM0.3%
  • PP0.2%
  • MDZ0.1%
Results for event-955594a4ce6eb994f68fa3ad
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRD_MCmexico/Sbe3f027854/20184,22941.4%UnknownRecorded
PRImexico/Sbe3f027854/20182,92228.6%UnknownRecorded
PT_MORENA_ESmexico/Sbe3f027854/20181,75617.2%UnknownRecorded
PAZmexico/Sbe3f027854/20183583.5%UnknownRecorded
CAND_IND4mexico/Sbe3f027854/20182862.8%UnknownRecorded
PANALmexico/Sbe3f027854/20182272.2%UnknownRecorded
CAND_IND5mexico/Sbe3f027854/2018850.8%UnknownRecorded
PVEMmexico/Sbe3f027854/2018320.3%UnknownRecorded
PPmexico/Sbe3f027854/2018220.2%UnknownRecorded
MDZmexico/Sbe3f027854/201860.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

44.460–100 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=10.85612490830976, oldest_gap=13.171419933487858, previous_gap=10.923745890338317

pedersen volatility

Provisional volatility

36.44percentage 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=[[0,36.43508330713612,0,9.504348737294352,0,2.483495756051556,0,51.57707219951797],[0,0,0,11.337363453176371,0.26513946335772615,3.1286456676211687,21.433874217838582,63.83497719800614],[0,29.446739897208506,0,0,0.3224831200241862,0,0,70.23077698276731]]

pedersen volatility

Provisional volatility

35.9percentage 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=[[0,36.43508330713612,0,9.504348737294352,0,2.483495756051556,0,51.57707219951797],[0,0,0,11.337363453176371,0.26513946335772615,3.1286456676211687,21.433874217838582,63.83497719800614],[0,29.446739897208506,0,0,0.3224831200241862,0,0,70.23077698276731]]

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: Both intervals mean

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,36.43508330713612,0,9.504348737294352,0,2.483495756051556,0,51.57707219951797],[0,0,0,11.337363453176371,0.26513946335772615,3.1286456676211687,21.433874217838582,63.83497719800614],[0,29.446739897208506,0,0,0.3224831200241862,0,0,70.23077698276731]]

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. “JUAN ALDAMA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-32-22. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S311f74d1bd, mexico--S8a0211af68, mexico--Sbe3f027854.