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

Office briefing

MENDEZ — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · MENDEZ / TAMAULIPAS · municipal · Municipal governmentMX-M-28-23

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
MENDEZ / TAMAULIPAS
Next election
2027-06-06
Linked upcoming event
next-56aa126e5e8ce74365406b55
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

  • PAN_PRI71.0%
  • PT_PVEM_MORENA26.7%
  • PRD0.0%
  • MC0.0%
Results for event-61a5a8c271a9c43b49bb9b71
Label / candidateParty codeVotesShareSeatsStatus
PAN_PRImexico/Sb1202c5ab6/20242,03771%UnknownRecorded
PT_PVEM_MORENAmexico/Sb1202c5ab6/202476726.7%UnknownRecorded
PRDmexico/Sb1202c5ab6/20240 (recorded zero)0% (recorded zero)UnknownRecorded
MCmexico/Sb1202c5ab6/20240 (recorded zero)0% (recorded zero)UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PAN50.5%
  • PRI40.8%
  • FXM3.4%
  • PT_MORENA2.6%
  • PVEM0.6%
  • MC0.1%
  • PES0.1%
  • PRD0.0%
  • RSP0.0%
Results for event-3934ea65e1b4c690b65e8954
Label / candidateParty codeVotesShareSeatsStatus
PANmexico/Sefc7c7507e/20211,55450.5%UnknownRecorded
PRImexico/Sefc7c7507e/20211,25740.8%UnknownRecorded
FXMmexico/Sefc7c7507e/20211043.4%UnknownRecorded
PT_MORENAmexico/Sefc7c7507e/2021792.6%UnknownRecorded
PVEMmexico/Sefc7c7507e/2021190.6%UnknownRecorded
MCmexico/Sefc7c7507e/202120.1%UnknownRecorded
PESmexico/Sefc7c7507e/202120.1%UnknownRecorded
PRDmexico/Sefc7c7507e/20210 (recorded zero)0% (recorded zero)UnknownRecorded
RSPmexico/Sefc7c7507e/20210 (recorded zero)0% (recorded zero)UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PAN46.1%
  • PRI37.4%
  • PT_MORENA_ES13.8%
  • PRD0.3%
  • PANAL0.2%
  • MC0.2%
  • PVEM0.1%
Results for event-a608b9fcc68ec23aa0feb568
Label / candidateParty codeVotesShareSeatsStatus
PANmexico/S707cce1406/20181,51846.1%UnknownRecorded
PRImexico/S707cce1406/20181,23337.4%UnknownRecorded
PT_MORENA_ESmexico/S707cce1406/201845513.8%UnknownRecorded
PRDmexico/S707cce1406/201890.3%UnknownRecorded
PANALmexico/S707cce1406/201870.2%UnknownRecorded
MCmexico/S707cce1406/201860.2%UnknownRecorded
PVEMmexico/S707cce1406/201820.1%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=45.29243937232525, oldest_gap=8.823529411764703, previous_gap=9.84421610871727

pedersen volatility

Withheld volatility

Unknownpercentage 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Latest interval, vectors=[null,[51.50812064965197,41.6639045409347,0,0,0.6297646668876368,0.06629101756711965,0,6.131919124958569],[46.9969040247678,38.1733746130031,0.2786377708978328,0,0.06191950464396285,0.18575851393188855,0,14.303405572755418]]

pedersen volatility

Provisional volatility

8.57percentage 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=[null,[51.50812064965197,41.6639045409347,0,0,0.6297646668876368,0.06629101756711965,0,6.131919124958569],[46.9969040247678,38.1733746130031,0.2786377708978328,0,0.06191950464396285,0.18575851393188855,0,14.303405572755418]]

pedersen volatility

Withheld volatility

Unknownpercentage 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[null,[51.50812064965197,41.6639045409347,0,0,0.6297646668876368,0.06629101756711965,0,6.131919124958569],[46.9969040247678,38.1733746130031,0.2786377708978328,0,0.06191950464396285,0.18575851393188855,0,14.303405572755418]]

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. “MENDEZ — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-28-23. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--Sb1202c5ab6, mexico--Sefc7c7507e, mexico--S707cce1406.