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

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Office briefing

TZOMPANTEPEC — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · TZOMPANTEPEC / TLAXCALA · municipal · Municipal governmentMX-M-29-38

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
TZOMPANTEPEC / TLAXCALA
Next election
2027-06-06
Linked upcoming event
next-b47f05e28c602d768c7497f3
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

  • PAC26.4%
  • RSP18.6%
  • MORENA18.1%
  • PT9.0%
  • MC8.7%
  • PRD4.1%
  • PVEM4.0%
  • PANALT2.0%
  • PRI1.8%
  • PAN1.7%
  • FXM0.7%
  • PAN_PRI0.3%
Results for event-3e65b502e4fab33a648fd233
Label / candidateParty codeVotesShareSeatsStatus
PACmexico/S3886b4b1dc/20242,40526.4%UnknownRecorded
RSPmexico/S3886b4b1dc/20241,69018.6%UnknownRecorded
MORENAmexico/S3886b4b1dc/20241,65018.1%UnknownRecorded
PTmexico/S3886b4b1dc/20248199%UnknownRecorded
MCmexico/S3886b4b1dc/20247968.7%UnknownRecorded
PRDmexico/S3886b4b1dc/20243694.1%UnknownRecorded
PVEMmexico/S3886b4b1dc/20243664%UnknownRecorded
PANALTmexico/S3886b4b1dc/20241862%UnknownRecorded
PRImexico/S3886b4b1dc/20241651.8%UnknownRecorded
PANmexico/S3886b4b1dc/20241581.7%UnknownRecorded
FXMmexico/S3886b4b1dc/2024660.7%UnknownRecorded
PAN_PRImexico/S3886b4b1dc/2024230.3%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PRI23.4%
  • MORENA19.4%
  • PAN19.0%
  • PRD9.2%
  • MC5.7%
  • PAC4.4%
  • PISSI4.0%
  • RSP3.8%
  • FXM2.0%
  • PEST1.8%
  • PS1.5%
  • PT1.5%
  • PES1.1%
  • PVEM0.4%
  • PANALT0.3%
Results for event-e807a6780b342090558c13cf
Label / candidateParty codeVotesShareSeatsStatus
PRImexico/Sf2d1eb3089/20211,85823.4%UnknownRecorded
MORENAmexico/Sf2d1eb3089/20211,54419.4%UnknownRecorded
PANmexico/Sf2d1eb3089/20211,50819%UnknownRecorded
PRDmexico/Sf2d1eb3089/20217299.2%UnknownRecorded
MCmexico/Sf2d1eb3089/20214525.7%UnknownRecorded
PACmexico/Sf2d1eb3089/20213534.4%UnknownRecorded
PISSImexico/Sf2d1eb3089/20213194%UnknownRecorded
RSPmexico/Sf2d1eb3089/20213043.8%UnknownRecorded
FXMmexico/Sf2d1eb3089/20211592%UnknownRecorded
PESTmexico/Sf2d1eb3089/20211411.8%UnknownRecorded
PSmexico/Sf2d1eb3089/20211231.5%UnknownRecorded
PTmexico/Sf2d1eb3089/20211191.5%UnknownRecorded
PESmexico/Sf2d1eb3089/2021881.1%UnknownRecorded
PVEMmexico/Sf2d1eb3089/2021280.4%UnknownRecorded
PANALTmexico/Sf2d1eb3089/2021200.3%UnknownRecorded

2016

Special · Legal certification not established · candidate marks

  • PAC17.5%
  • ES16.7%
  • PANAL13.0%
  • MORENA10.1%
  • CAND_IND269.2%
  • PRI7.1%
  • PAN5.5%
  • PRD4.6%
  • CAND_IND274.1%
  • PVEM3.7%
  • PT3.3%
  • PS1.6%
  • MC0.4%
Results for event-99402a6f9fafa21abae8437a
Label / candidateParty codeVotesShareSeatsStatus
PACmexico/Scf068ed12b/20161,17817.5%UnknownRecorded
ESmexico/Scf068ed12b/20161,12116.7%UnknownRecorded
PANALmexico/Scf068ed12b/201687213%UnknownRecorded
MORENAmexico/Scf068ed12b/201667910.1%UnknownRecorded
CAND_IND26mexico/Scf068ed12b/20166179.2%UnknownRecorded
PRImexico/Scf068ed12b/20164797.1%UnknownRecorded
PANmexico/Scf068ed12b/20163735.5%UnknownRecorded
PRDmexico/Scf068ed12b/20163124.6%UnknownRecorded
CAND_IND27mexico/Scf068ed12b/20162744.1%UnknownRecorded
PVEMmexico/Scf068ed12b/20162513.7%UnknownRecorded
PTmexico/Scf068ed12b/20162223.3%UnknownRecorded
PSmexico/Scf068ed12b/20161051.6%UnknownRecorded
MCmexico/Scf068ed12b/2016280.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

68.810–100 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=8.225008627631428, oldest_gap=0.8754415604361867, previous_gap=4.054228534538414

pedersen volatility

Provisional volatility

45.87percentage 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=[[1.8175543540779937,1.898078914068791,4.244794662372024,9.421373518923271,4.210284136661682,9.156792821810653,18.98078914068791,50.27033245139768],[19.47062621045836,23.989670755326017,9.412524209167204,1.5364751452550032,0.3615235635894125,5.836023240800516,19.935442220787603,19.457714654615877],[5.728766702503456,7.356780832437414,4.791890646598064,3.4096144985409307,3.855014590692674,0.43004146828444173,10.428505605897712,63.999385655045316]]

pedersen volatility

Provisional volatility

49.91percentage 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=[[1.8175543540779937,1.898078914068791,4.244794662372024,9.421373518923271,4.210284136661682,9.156792821810653,18.98078914068791,50.27033245139768],[19.47062621045836,23.989670755326017,9.412524209167204,1.5364751452550032,0.3615235635894125,5.836023240800516,19.935442220787603,19.457714654615877],[5.728766702503456,7.356780832437414,4.791890646598064,3.4096144985409307,3.855014590692674,0.43004146828444173,10.428505605897712,63.999385655045316]]

pedersen volatility

Provisional volatility

47.89percentage 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=[[1.8175543540779937,1.898078914068791,4.244794662372024,9.421373518923271,4.210284136661682,9.156792821810653,18.98078914068791,50.27033245139768],[19.47062621045836,23.989670755326017,9.412524209167204,1.5364751452550032,0.3615235635894125,5.836023240800516,19.935442220787603,19.457714654615877],[5.728766702503456,7.356780832437414,4.791890646598064,3.4096144985409307,3.855014590692674,0.43004146828444173,10.428505605897712,63.999385655045316]]

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. “TZOMPANTEPEC — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-29-38. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S3886b4b1dc, mexico--Sf2d1eb3089, mexico--Scf068ed12b.