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

Office briefing

TAMPAMOLON CORONA — Municipal government

Tracked current office. Identifiers stay separate from display names.

Mexico · TAMPAMOLON CORONA / SAN LUIS POTOSI · municipal · Municipal governmentMX-M-24-39

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
TAMPAMOLON CORONA / SAN LUIS POTOSI
Next election
2027-06-06
Linked upcoming event
next-b43f5c7ad8d596445ea812ff
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

  • PVEM44.5%
  • MORENA41.2%
  • MC9.4%
  • PAN_PRI_PRD1.8%
  • PES0.1%
Results for event-23e5ca33a3f82d59bb9049cf
Label / candidateParty codeVotesShareSeatsStatus
PVEMmexico/S9a9b65dfd2/20243,56744.5%UnknownRecorded
MORENAmexico/S9a9b65dfd2/20243,30141.2%UnknownRecorded
MCmexico/S9a9b65dfd2/20247509.4%UnknownRecorded
PAN_PRI_PRDmexico/S9a9b65dfd2/20241461.8%UnknownRecorded
PESmexico/S9a9b65dfd2/2024120.1%UnknownRecorded

2021

Special · Legal certification not established · candidate marks

  • PT_PVEM52.2%
  • NASLP28.1%
  • FXM6.4%
  • MORENA5.5%
  • PAN_PRI_PCP5.0%
Results for event-4e03bfbc197684d171a22ddd
Label / candidateParty codeVotesShareSeatsStatus
PT_PVEMmexico/S2a4db28f38/20213,89152.2%UnknownRecorded
NASLPmexico/S2a4db28f38/20212,09028.1%UnknownRecorded
FXMmexico/S2a4db28f38/20214736.4%UnknownRecorded
MORENAmexico/S2a4db28f38/20214095.5%UnknownRecorded
PAN_PRI_PCPmexico/S2a4db28f38/20213695%UnknownRecorded

2018

Special · Legal certification not established · candidate marks

  • PANAL42.6%
  • PRD41.4%
  • PRI_PVEM8.7%
  • PT_MORENA_ES2.9%
Results for event-90a3a35d1ccae45f84a0d66c
Label / candidateParty codeVotesShareSeatsStatus
PANALmexico/Saba95ea808/20183,20042.6%UnknownRecorded
PRDmexico/Saba95ea808/20183,11141.4%UnknownRecorded
PRI_PVEMmexico/Saba95ea808/20186578.7%UnknownRecorded
PT_MORENA_ESmexico/Saba95ea808/20182172.9%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

51.760–100 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=3.4207818930041114, oldest_gap=1.2386917188587319, previous_gap=24.90320796460177

pedersen volatility

Provisional volatility

92.31percentage 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=[[0,0,0,0,45.87191358024691,9.645061728395062,42.4511316872428,2.031893004115226],[0,0,0,0,0,0,5.655420353982301,94.34457964601769],[0,0,43.298538622129435,0,0,0,0,56.701461377870565]]

pedersen volatility

Provisional volatility

43.3percentage 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=[[0,0,0,0,45.87191358024691,9.645061728395062,42.4511316872428,2.031893004115226],[0,0,0,0,0,0,5.655420353982301,94.34457964601769],[0,0,43.298538622129435,0,0,0,0,56.701461377870565]]

pedersen volatility

Provisional volatility

67.81percentage 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=[[0,0,0,0,45.87191358024691,9.645061728395062,42.4511316872428,2.031893004115226],[0,0,0,0,0,0,5.655420353982301,94.34457964601769],[0,0,43.298538622129435,0,0,0,0,56.701461377870565]]

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. “TAMPAMOLON CORONA — Municipal government.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/MX-M-24-39. Sources: mexico--url-3635e08ffbefd711526cbeea, mexico--S9a9b65dfd2, mexico--S2a4db28f38, mexico--Saba95ea808.