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

Office briefing

ATLAUTLA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ATLAUTLA / MEXICO · municipal · Municipal governmentMX-M-15-15

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
ATLAUTLA / MEXICO
Next election
2027-06-06
Linked upcoming event
next-f816dff8b1ae4c99b57e1e19
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

  • PVEM43.0%
  • PRD21.9%
  • PT9.8%
  • MORENA9.6%
  • PRI4.9%
  • NAEM3.4%
  • MC1.4%
  • PAN1.4%
Results for event-2e377fcae8a6f14c09f6c549
Label / candidateParty codeVotesShareSeatsStatus
PVEMmexico/S6799faaa5a/20246,98643%UnknownRecorded
PRDmexico/S6799faaa5a/20243,56221.9%UnknownRecorded
PTmexico/S6799faaa5a/20241,5839.8%UnknownRecorded
MORENAmexico/S6799faaa5a/20241,5529.6%UnknownRecorded
PRImexico/S6799faaa5a/20247964.9%UnknownRecorded
NAEMmexico/S6799faaa5a/20245553.4%UnknownRecorded
MCmexico/S6799faaa5a/20242341.4%UnknownRecorded
PANmexico/S6799faaa5a/20242321.4%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PRD30.5%
  • RSP24.0%
  • PAN_PRI22.8%
  • PT_MORENA11.8%
  • MC4.1%
  • PES3.0%
  • FXM1.1%
  • PVEM0.9%
Results for event-40c4ce04e164a8c638897cc3
Label / candidateParty codeVotesShareSeatsStatus
PRDmexico/S08c7207e3d/20213,95430.5%UnknownRecorded
RSPmexico/S08c7207e3d/20213,11024%UnknownRecorded
PAN_PRImexico/S08c7207e3d/20212,95122.8%UnknownRecorded
PT_MORENAmexico/S08c7207e3d/20211,52511.8%UnknownRecorded
MCmexico/S08c7207e3d/20215364.1%UnknownRecorded
PESmexico/S08c7207e3d/20213923%UnknownRecorded
FXMmexico/S08c7207e3d/20211461.1%UnknownRecorded
PVEMmexico/S08c7207e3d/20211230.9%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • VR31.9%
  • PRI25.5%
  • PAN_PRD_MC18.4%
  • PT_MORENA_ES10.7%
  • CAND_IND45.7%
  • PANAL3.9%
  • PVEM0.4%
Results for event-d57815bfe28424583a8d8ee0
Label / candidateParty codeVotesShareSeatsStatus
VRmexico/Sf9deac09ce/20184,80031.9%UnknownRecorded
PRImexico/Sf9deac09ce/20183,82825.5%UnknownRecorded
PAN_PRD_MCmexico/Sf9deac09ce/20182,76618.4%UnknownRecorded
PT_MORENA_ESmexico/Sf9deac09ce/20181,60710.7%UnknownRecorded
CAND_IND4mexico/Sf9deac09ce/20188635.7%UnknownRecorded
PANALmexico/Sf9deac09ce/20185923.9%UnknownRecorded
PVEMmexico/Sf9deac09ce/2018600.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

20.440–100 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=22.09032258064516, oldest_gap=6.696059520529069, previous_gap=6.626364135981785

pedersen volatility

Provisional volatility

70.96percentage 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=[[1.4967741935483871,5.135483870967742,22.980645161290322,10.212903225806452,45.07096774193548,1.5096774193548388,10.012903225806452,3.5806451612903225],[0,0,31.043416817146895,0,0.9656905079689094,4.208212294888907,0,63.78268037999529],[0,26.37090107467622,0,0,0.41333700744006613,0,0,73.21576191788371]]

pedersen volatility

Provisional volatility

35.8percentage 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=[[1.4967741935483871,5.135483870967742,22.980645161290322,10.212903225806452,45.07096774193548,1.5096774193548388,10.012903225806452,3.5806451612903225],[0,0,31.043416817146895,0,0.9656905079689094,4.208212294888907,0,63.78268037999529],[0,26.37090107467622,0,0,0.41333700744006613,0,0,73.21576191788371]]

pedersen volatility

Provisional volatility

53.38percentage 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=[[1.4967741935483871,5.135483870967742,22.980645161290322,10.212903225806452,45.07096774193548,1.5096774193548388,10.012903225806452,3.5806451612903225],[0,0,31.043416817146895,0,0.9656905079689094,4.208212294888907,0,63.78268037999529],[0,26.37090107467622,0,0,0.41333700744006613,0,0,73.21576191788371]]

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. “ATLAUTLA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-15-15. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S6799faaa5a, mexico--S08c7207e3d, mexico--Sf9deac09ce.