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

Office briefing

TLALPAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · TLALPAN / CIUDAD DE MEXICO · municipal · Municipal governmentMX-M-9-12

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
TLALPAN / CIUDAD DE MEXICO
Next election
2027-06-06
Linked upcoming event
next-3163d8449d7f6072c10b695d
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_PT_MORENA52.8%
  • PAN_PRI_PRD38.8%
  • MC6.0%
Results for event-8c2896db279bc9f661f43aae
Label / candidateParty codeVotesShareSeatsStatus
PVEM_PT_MORENAmexico/S9f93688ab7/2024214,51652.8%UnknownRecorded
PAN_PRI_PRDmexico/S9f93688ab7/2024157,66338.8%UnknownRecorded
MCmexico/S9f93688ab7/202424,2786%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN_PRI_PRD41.5%
  • PT_MORENA38.9%
  • MC9.6%
  • FXM3.8%
  • PVEM1.6%
  • PES0.9%
  • ELIGE0.7%
  • RSP0.4%
Results for event-00a0161d8dc54ae1fe017016
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRI_PRDmexico/Sd28f341b3b/2021122,96441.5%UnknownRecorded
PT_MORENAmexico/Sd28f341b3b/2021115,44338.9%UnknownRecorded
MCmexico/Sd28f341b3b/202128,5139.6%UnknownRecorded
FXMmexico/Sd28f341b3b/202111,1853.8%UnknownRecorded
PVEMmexico/Sd28f341b3b/20214,8301.6%UnknownRecorded
PESmexico/Sd28f341b3b/20212,5470.9%UnknownRecorded
ELIGEmexico/Sd28f341b3b/20212,0280.7%UnknownRecorded
RSPmexico/Sd28f341b3b/20211,2250.4%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PT_MORENA_ES52.6%
  • PAN_PRD_MC28.0%
  • PRI8.4%
  • PVEM5.0%
  • PH2.0%
  • PANAL1.1%
Results for event-7e0914d99dfec0d502e4a73a
Label / candidateParty codeVotesShareSeatsStatus
PT_MORENA_ESmexico/S57d2a09e50/2018199,98952.6%UnknownRecorded
PAN_PRD_MCmexico/S57d2a09e50/2018106,36128%UnknownRecorded
PRImexico/S57d2a09e50/201831,9558.4%UnknownRecorded
PVEMmexico/S57d2a09e50/201819,1055%UnknownRecorded
PHmexico/S57d2a09e50/20187,4492%UnknownRecorded
PANALmexico/S57d2a09e50/20184,1401.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

40.390–100 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=14.340268932065769, oldest_gap=25.373510497318424, previous_gap=2.604810639513744

pedersen volatility

Provisional volatility

5.42percentage 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=[[0,0,0,0,0,6.123741036228393,0,93.8762589637716],[0,0,0,0,1.6728141721647878,9.875145029179006,0,88.4520407986562],[0,8.659915067520508,0,0,5.177520806289448,0,0,86.16256412619005]]

pedersen volatility

Provisional volatility

12.16percentage 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=[[0,0,0,0,0,6.123741036228393,0,93.8762589637716],[0,0,0,0,1.6728141721647878,9.875145029179006,0,88.4520407986562],[0,8.659915067520508,0,0,5.177520806289448,0,0,86.16256412619005]]

pedersen volatility

Provisional volatility

8.79percentage 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=[[0,0,0,0,0,6.123741036228393,0,93.8762589637716],[0,0,0,0,1.6728141721647878,9.875145029179006,0,88.4520407986562],[0,8.659915067520508,0,0,5.177520806289448,0,0,86.16256412619005]]

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. “TLALPAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-9-12. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S9f93688ab7, mexico--Sd28f341b3b, mexico--S57d2a09e50.