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

Office briefing

SAN JERONIMO ZACUALPAN — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · SAN JERONIMO ZACUALPAN / TLAXCALA · municipal · Municipal governmentMX-M-29-56

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
SAN JERONIMO ZACUALPAN / TLAXCALA
Next election
2027-06-06
Linked upcoming event
next-6ff308f314c11f1b544f421a
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

  • MORENA43.6%
  • PT41.1%
  • MC9.6%
  • PAC4.0%
  • PANALT0.1%
Results for event-77abc30bcd6d62285c041619
Label / candidateParty codeVotesShareSeatsStatus
MORENAmexico/S3b21c9e3f2/20241,20343.6%UnknownRecorded
PTmexico/S3b21c9e3f2/20241,13441.1%UnknownRecorded
MCmexico/S3b21c9e3f2/20242649.6%UnknownRecorded
PACmexico/S3b21c9e3f2/20241114%UnknownRecorded
PANALTmexico/S3b21c9e3f2/202440.1%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • MC42.0%
  • PT36.1%
  • PEST13.4%
  • PRI5.6%
  • MORENA1.0%
  • PES0.3%
  • PS0.2%
  • PRD0.0%
  • PAN0.0%
  • PVEM0.0%
  • PAC0.0%
  • PANALT0.0%
  • PISSI0.0%
  • RSP0.0%
  • FXM0.0%
Results for event-cd3bb7dc59e6ec582be9631b
Label / candidateParty codeVotesShareSeatsStatus
MCmexico/S69a4b60ee3/20211,09042%UnknownRecorded
PTmexico/S69a4b60ee3/202193636.1%UnknownRecorded
PESTmexico/S69a4b60ee3/202134713.4%UnknownRecorded
PRImexico/S69a4b60ee3/20211455.6%UnknownRecorded
MORENAmexico/S69a4b60ee3/2021261%UnknownRecorded
PESmexico/S69a4b60ee3/202170.3%UnknownRecorded
PSmexico/S69a4b60ee3/202140.2%UnknownRecorded
PRDmexico/S69a4b60ee3/202110%UnknownRecorded
PANmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
PVEMmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
PACmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
PANALTmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
PISSImexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
RSPmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded
FXMmexico/S69a4b60ee3/20210 (recorded zero)0% (recorded zero)UnknownRecorded

2016

Special · Legal certification not established · candidate marks

  • PRI_PVEM_PANAL39.4%
  • MORENA30.4%
  • PS18.4%
  • PAN9.1%
Results for event-43d531e39f7a92aab0cdd20a
Label / candidateParty codeVotesShareSeatsStatus
PRI_PVEM_PANALmexico/Sd350ebe543/201690939.4%UnknownRecorded
MORENAmexico/Sd350ebe543/201670130.4%UnknownRecorded
PSmexico/Sd350ebe543/201642518.4%UnknownRecorded
PANmexico/Sd350ebe543/20162109.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

78.710–100 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=2.5405007363770267, oldest_gap=9.265033407572382, previous_gap=6.025039123630677

pedersen volatility

Provisional volatility

48.41percentage 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=[[0,0,0,41.75257731958763,0,9.720176730486008,44.293078055964656,4.2341678939617085],[0,5.672926447574335,0.03912363067292645,36.61971830985915,0,42.64475743348983,1.0172143974960877,14.006259780907667],[9.35412026726058,0,0,0,0,0,31.224944320712694,59.42093541202672]]

pedersen volatility

Provisional volatility

84.98percentage 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=[[0,0,0,41.75257731958763,0,9.720176730486008,44.293078055964656,4.2341678939617085],[0,5.672926447574335,0.03912363067292645,36.61971830985915,0,42.64475743348983,1.0172143974960877,14.006259780907667],[9.35412026726058,0,0,0,0,0,31.224944320712694,59.42093541202672]]

pedersen volatility

Provisional volatility

66.69percentage 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: Both intervals mean

Method pedersen.grouped.v1. Inputs: groups=["PAN","PRI","PRD","PT","PVEM","MC","MORENA","Other"], interval=Both intervals mean, vectors=[[0,0,0,41.75257731958763,0,9.720176730486008,44.293078055964656,4.2341678939617085],[0,5.672926447574335,0.03912363067292645,36.61971830985915,0,42.64475743348983,1.0172143974960877,14.006259780907667],[9.35412026726058,0,0,0,0,0,31.224944320712694,59.42093541202672]]

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. “SAN JERONIMO ZACUALPAN — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-29-56. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S3b21c9e3f2, mexico--S69a4b60ee3, mexico--Sd350ebe543.