Skip to observatory content

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

Office briefing

ECATEPEC DE MORELOS — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · ECATEPEC DE MORELOS / MEXICO · municipal · Municipal governmentMX-M-15-34

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
ECATEPEC DE MORELOS / MEXICO
Next election
2027-06-06
Linked upcoming event
next-083e1011e3806513677b486d
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

  • MORENA43.3%
  • CC_PAN_PRI_PRD_NAEM24.3%
  • MC10.0%
  • PVEM8.5%
  • PT7.8%
Results for event-955cdc7eb18932b1a2bbb0db
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/Saa110a218f/2024347,23243.3%UnknownRecorded
CC_PAN_PRI_PRD_NAEMmexico/Saa110a218f/2024194,92324.3%UnknownRecorded
MCmexico/Saa110a218f/202480,30510%UnknownRecorded
PVEMmexico/Saa110a218f/202468,3478.5%UnknownRecorded
PTmexico/Saa110a218f/202462,4797.8%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PT_MORENA_NAEM47.6%
  • PRI28.6%
  • PAN7.5%
  • PRD4.4%
  • MC2.6%
  • PVEM2.5%
  • FXM1.6%
  • PES1.3%
  • RSP0.9%
Results for event-10faf74a7d5f10e6269c5119
Label / candidateParty codeVotesShareSeatsStatus
PT_MORENA_NAEMmexico/S001807a517/2021286,28647.6%UnknownRecorded
PRImexico/S001807a517/2021171,92828.6%UnknownRecorded
PANmexico/S001807a517/202144,8087.5%UnknownRecorded
PRDmexico/S001807a517/202126,2694.4%UnknownRecorded
MCmexico/S001807a517/202115,6072.6%UnknownRecorded
PVEMmexico/S001807a517/202115,2962.5%UnknownRecorded
FXMmexico/S001807a517/20219,6811.6%UnknownRecorded
PESmexico/S001807a517/20217,5151.3%UnknownRecorded
RSPmexico/S001807a517/20215,5380.9%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PT_MORENA_ES51.7%
  • PRI20.1%
  • PAN_PRD_MC18.8%
  • PVEM3.0%
  • PANAL2.1%
  • VR1.4%
Results for event-023361b32249cda1887661e3
Label / candidateParty codeVotesShareSeatsStatus
PT_MORENA_ESmexico/S05aaf91bad/2018420,62351.7%UnknownRecorded
PRImexico/S05aaf91bad/2018163,32520.1%UnknownRecorded
PAN_PRD_MCmexico/S05aaf91bad/2018153,11618.8%UnknownRecorded
PVEMmexico/S05aaf91bad/201824,6833%UnknownRecorded
PANALmexico/S05aaf91bad/201817,0562.1%UnknownRecorded
VRmexico/S05aaf91bad/201811,1251.4%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=20.219279264449355, oldest_gap=32.5723357065454, previous_gap=19.6178601817034

pedersen volatility

Provisional volatility

68.82percentage 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=[[0,0,0,8.294193705976216,9.073180704274339,10.660625579129308,46.095639637534745,25.87636037308539],[7.686712595723657,29.493865451650976,4.5063884390525075,0,2.623994730052425,2.677346087338402,0,53.01169269618204],[0,20.675935021926048,0,0,3.124715163913673,0,0,76.19934981416027]]

pedersen volatility

Provisional volatility

23.69percentage 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=[[0,0,0,8.294193705976216,9.073180704274339,10.660625579129308,46.095639637534745,25.87636037308539],[7.686712595723657,29.493865451650976,4.5063884390525075,0,2.623994730052425,2.677346087338402,0,53.01169269618204],[0,20.675935021926048,0,0,3.124715163913673,0,0,76.19934981416027]]

pedersen volatility

Provisional volatility

46.26percentage 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=[[0,0,0,8.294193705976216,9.073180704274339,10.660625579129308,46.095639637534745,25.87636037308539],[7.686712595723657,29.493865451650976,4.5063884390525075,0,2.623994730052425,2.677346087338402,0,53.01169269618204],[0,20.675935021926048,0,0,3.124715163913673,0,0,76.19934981416027]]

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. “ECATEPEC DE MORELOS — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-15-34. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Saa110a218f, mexico--S001807a517, mexico--S05aaf91bad.