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

Office briefing

ATARJEA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ATARJEA / GUANAJUATO · municipal · Municipal governmentMX-M-11-6

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
ATARJEA / GUANAJUATO
Next election
2027-06-06
Linked upcoming event
next-f3513d9a8c92402f16e4380e
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

  • PAN52.6%
  • PT38.4%
  • MORENA5.6%
  • PRI0.3%
  • PRD0.1%
  • MC0.0%
Results for event-dd5f54b7d543ef5c4243b999
Label / candidateParty codeVotesShareSeatsStatus
PANmexico/Sc55912ea06/20241,87252.6%UnknownRecorded
PTmexico/Sc55912ea06/20241,36938.4%UnknownRecorded
MORENAmexico/Sc55912ea06/20241995.6%UnknownRecorded
PRImexico/Sc55912ea06/202490.3%UnknownRecorded
PRDmexico/Sc55912ea06/202440.1%UnknownRecorded
MCmexico/Sc55912ea06/20240 (recorded zero)0% (recorded zero)UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN52.9%
  • MORENA37.8%
  • PVEM4.1%
  • PRI1.1%
  • PRD0.9%
Results for event-a3b1777f89d6cba29ec8289f
Label / candidateParty codeVotesShareSeatsStatus
PANmexico/Sdf5c1b75ca/20211,89952.9%UnknownRecorded
MORENAmexico/Sdf5c1b75ca/20211,35637.8%UnknownRecorded
PVEMmexico/Sdf5c1b75ca/20211494.1%UnknownRecorded
PRImexico/Sdf5c1b75ca/2021401.1%UnknownRecorded
PRDmexico/Sdf5c1b75ca/2021330.9%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN46.4%
  • CAND_IND830.2%
  • PRI13.5%
  • PVEM2.2%
  • MORENA_PT_ES1.4%
  • MC0.3%
Results for event-0b82405b6e4ed47d8118a107
Label / candidateParty codeVotesShareSeatsStatus
PANmexico/Sbd743661b7/20181,58046.4%UnknownRecorded
CAND_IND8mexico/Sbd743661b7/20181,02930.2%UnknownRecorded
PRImexico/Sbd743661b7/201845913.5%UnknownRecorded
PVEMmexico/Sbd743661b7/2018752.2%UnknownRecorded
MORENA_PT_ESmexico/Sbd743661b7/2018481.4%UnknownRecorded
MCmexico/Sbd743661b7/2018100.3%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

24.270–100 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=14.567043150883286, oldest_gap=17.21337082161824, previous_gap=15.616911130284727

pedersen volatility

Provisional volatility

39.65percentage 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=[[54.21372719374457,0.26064291920069504,0.11584129742253113,39.64668404286128,0,0,5.763104546770924,0],[54.6160483175151,1.1504170261719873,0.9490940465918896,0,4.285303422490653,0,38.999137187230374,0],[49.359575132771006,14.339268978444236,0,0,2.343017806935333,0.31240237425804435,0,33.64573570759138]]

pedersen volatility

Provisional volatility

47.15percentage 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=[[54.21372719374457,0.26064291920069504,0.11584129742253113,39.64668404286128,0,0,5.763104546770924,0],[54.6160483175151,1.1504170261719873,0.9490940465918896,0,4.285303422490653,0,38.999137187230374,0],[49.359575132771006,14.339268978444236,0,0,2.343017806935333,0.31240237425804435,0,33.64573570759138]]

pedersen volatility

Provisional volatility

43.4percentage 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=[[54.21372719374457,0.26064291920069504,0.11584129742253113,39.64668404286128,0,0,5.763104546770924,0],[54.6160483175151,1.1504170261719873,0.9490940465918896,0,4.285303422490653,0,38.999137187230374,0],[49.359575132771006,14.339268978444236,0,0,2.343017806935333,0.31240237425804435,0,33.64573570759138]]

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. “ATARJEA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-11-6. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sc55912ea06, mexico--Sdf5c1b75ca, mexico--Sbd743661b7.