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

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Office briefing

SAN MATEO — Municipal council

Tracked current office. Identifiers stay separate from display names.

Costa Rica · SAN MATEO / ALAJUELA · municipal · Municipal councilCR-C-ALAJUELA-SAN-MATEO

Read the complete original research briefing

TSE vote books joined to official elected-member declarations where geographic and total checks reconcile. Substitutes retained separately. Subsequent replacements and current officeholder status require review.

1. What office, where, and when is the next election?

Geography
SAN MATEO / ALAJUELA
Next election
2028-02-06
Linked upcoming event
next-bb3ba181fc41bb56fda6d362
Registry qualification
Unknown

2. How certain is that date?

2028-02-06 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2024-02-04

Ordinary · Legal certification not established · list votes

  • LIBERACIÓN NACIONAL26.9%
  • NUEVA REPÚBLICA23.6%
  • UNIDAD SOCIAL CRISTIANA20.1%
  • UNIDOS PODEMOS20.1%
  • PROGRESO SOCIAL DEMOCRÁTICO8.5%
  • REPUBLICANO SOCIAL CRISTIANO0.7%
Results for event-923fb6084f428c2ca0c7e70e
Label / candidateParty codeVotesShareSeatsStatus
LIBERACIÓN NACIONALcosta-rica/Sc1df243471/202475326.9%2Recorded
NUEVA REPÚBLICAcosta-rica/Sc1df243471/202466023.6%1Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/Sc1df243471/202456320.1%1Recorded
UNIDOS PODEMOScosta-rica/Sc1df243471/202456220.1%1Recorded
PROGRESO SOCIAL DEMOCRÁTICOcosta-rica/Sc1df243471/20242388.5%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sc1df243471/2024190.7%0 (recorded zero)Recorded

2020-02-02

Ordinary · Legal certification not established · list votes

  • LIBERACIÓN NACIONAL45.4%
  • UNIDAD SOCIAL CRISTIANA36.0%
  • FRENTE AMPLIO9.5%
  • REPUBLICANO SOCIAL CRISTIANO5.1%
  • NUEVA REPUBLICA2.2%
  • NUEVA GENERACIÓN0.9%
  • RESTAURACIÓN NACIONAL0.7%
  • UNIDOS PODEMOS0.2%
Results for event-3afe40a264f3b7a3557a1836
Label / candidateParty codeVotesShareSeatsStatus
LIBERACIÓN NACIONALcosta-rica/Sfa91292290/20201,43545.4%3Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/Sfa91292290/20201,13636%2Recorded
FRENTE AMPLIOcosta-rica/Sfa91292290/20202999.5%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sfa91292290/20201615.1%0 (recorded zero)Recorded
NUEVA REPUBLICAcosta-rica/Sfa91292290/2020702.2%0 (recorded zero)Recorded
NUEVA GENERACIÓNcosta-rica/Sfa91292290/2020290.9%0 (recorded zero)Recorded
RESTAURACIÓN NACIONALcosta-rica/Sfa91292290/2020230.7%0 (recorded zero)Recorded
UNIDOS PODEMOScosta-rica/Sfa91292290/202060.2%0 (recorded zero)Recorded

2016-02-07

Ordinary · Legal certification not established · list votes

  • LIBERACIÓN NACIONAL59.0%
  • ACCIÓN CIUDADANA15.0%
  • UNIDAD SOCIAL CRISTIANA8.8%
  • FRENTE AMPLIO7.4%
  • REPUBLICANO SOCIAL CRISTIANO6.4%
  • MOVIMIENTO LIBERTARIO3.4%
Results for event-235914f163d48064e1af71b4
Label / candidateParty codeVotesShareSeatsStatus
LIBERACIÓN NACIONALcosta-rica/S79669f3e5d/20161,55859%4Recorded
ACCIÓN CIUDADANAcosta-rica/S79669f3e5d/201639715%1Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/S79669f3e5d/20162328.8%0 (recorded zero)Recorded
FRENTE AMPLIOcosta-rica/S79669f3e5d/20161967.4%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/S79669f3e5d/20161686.4%0 (recorded zero)Recorded
MOVIMIENTO LIBERTARIOcosta-rica/S79669f3e5d/2016893.4%0 (recorded zero)Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

53.830–100 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=3.3273703041144884, oldest_gap=43.97727272727273, previous_gap=9.465020576131693

pedersen volatility

Provisional volatility

48.91percentage points

Grouped Pedersen lower bound (percentage points). Twelve explicitly named standalone national parties; accent variants normalized. Local parties and coalitions remain Other. No alliance votes are attributed to individual member parties. 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=["PLN","PUSC","PAC","Frente Amplio","PRN","Nueva Republica","PML","PIN","PASE","PRSC","PLP","PPSD","Other"], interval=Latest interval, vectors=[[26.94096601073345,20.143112701252235,0,0,0,23.613595706618963,0,0,0,0.6797853309481217,0,8.51520572450805,20.107334525939176],[45.42576764798987,35.96074707185818,0,9.465020576131687,0.7280785058562836,2.2158911047799936,0,0,0,5.096549540993985,0,0,1.1079455523899968],[59.015151515151516,8.787878787878787,15.037878787878787,7.424242424242424,0,0,3.371212121212121,0,0,6.363636363636363,0,0,0]]

pedersen volatility

Provisional volatility

33.27percentage points

Grouped Pedersen lower bound (percentage points). Twelve explicitly named standalone national parties; accent variants normalized. Local parties and coalitions remain Other. No alliance votes are attributed to individual member parties. 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=["PLN","PUSC","PAC","Frente Amplio","PRN","Nueva Republica","PML","PIN","PASE","PRSC","PLP","PPSD","Other"], interval=Previous interval, vectors=[[26.94096601073345,20.143112701252235,0,0,0,23.613595706618963,0,0,0,0.6797853309481217,0,8.51520572450805,20.107334525939176],[45.42576764798987,35.96074707185818,0,9.465020576131687,0.7280785058562836,2.2158911047799936,0,0,0,5.096549540993985,0,0,1.1079455523899968],[59.015151515151516,8.787878787878787,15.037878787878787,7.424242424242424,0,0,3.371212121212121,0,0,6.363636363636363,0,0,0]]

pedersen volatility

Provisional volatility

41.09percentage points

Grouped Pedersen lower bound (percentage points). Twelve explicitly named standalone national parties; accent variants normalized. Local parties and coalitions remain Other. No alliance votes are attributed to individual member parties. 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=["PLN","PUSC","PAC","Frente Amplio","PRN","Nueva Republica","PML","PIN","PASE","PRSC","PLP","PPSD","Other"], interval=Both intervals mean, vectors=[[26.94096601073345,20.143112701252235,0,0,0,23.613595706618963,0,0,0,0.6797853309481217,0,8.51520572450805,20.107334525939176],[45.42576764798987,35.96074707185818,0,9.465020576131687,0.7280785058562836,2.2158911047799936,0,0,0,5.096549540993985,0,0,1.1079455523899968],[59.015151515151516,8.787878787878787,15.037878787878787,7.424242424242424,0,0,3.371212121212121,0,0,6.363636363636363,0,0,0]]

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.

Officeholder observations
PersonRoleAs ofAffiliationPrincipal?
LEINER MIGUEL MOLINA PEREZREGIDURÍAS PROPIETARIAS2024LIBERACIÓN NACIONALprincipal
MARTA CALDERON PARAJELESREGIDURÍAS PROPIETARIAS2024LIBERACIÓN NACIONALprincipal
SUNSIRY CARMONA SIBAJAREGIDURÍAS PROPIETARIAS2024NUEVA REPÚBLICAprincipal
FULMEN RODRIGUEZ ALVARADOREGIDURÍAS PROPIETARIAS2024UNIDAD SOCIAL CRISTIANAprincipal
MARCOS RODRIGUEZ HERRERAREGIDURÍAS PROPIETARIAS2024UNIDOS PODEMOSprincipal
BRANDON JESUS BADILLA RODRIGUEZREGIDURÍAS SUPLENTES2024LIBERACIÓN NACIONALsubstitute
ROXY MELISSA ACUÑA RODRIGUEZREGIDURÍAS SUPLENTES2024LIBERACIÓN NACIONALsubstitute
LILIBETH ANDREA CARMONA VILLALOBOSREGIDURÍAS SUPLENTES2024NUEVA REPÚBLICAsubstitute
KATHERINE GISELA ALVARADO AGUEROREGIDURÍAS SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
FREDDY ALBERTO SALAS RODRIGUEZREGIDURÍAS SUPLENTES2024UNIDOS PODEMOSsubstitute
GARY VILLAR MONGEREGIDORES(AS) PROPIETARIOS(AS)2020LIBERACIÓN NACIONALprincipal
MARIA JULIA BERTARIONI HERRERAREGIDORES(AS) PROPIETARIOS(AS)2020LIBERACIÓN NACIONALprincipal
LUIS EDUARDO RODRIGUEZ VARGASREGIDORES(AS) PROPIETARIOS(AS)2020LIBERACIÓN NACIONALprincipal
JOSE JOAQUIN VENEGAS CHINCHILLAREGIDORES(AS) PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
MARJORIE DELGADO HIDALGOREGIDORES(AS) PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
ANA PATRICIA CAMPOS MORAREGIDORES(AS) SUPLENTES2020LIBERACIÓN NACIONALsubstitute
JAVIER JESUS RODRIGUEZ QUESADAREGIDORES(AS) SUPLENTES2020LIBERACIÓN NACIONALsubstitute
MARTA CALDERON PARAJELESREGIDORES(AS) SUPLENTES2020LIBERACIÓN NACIONALsubstitute
CAROL JOHANNA ARBUROLA DELGADOREGIDORES(AS) SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
RODOLFO RAMIREZ RODRIGUEZREGIDORES(AS) SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
LUIS ANGEL FUENTES CANALESREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
GRETTEL ESQUIVEL ALVARADOREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
LUIS EDUARDO RODRIGUEZ VARGASREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
LEDA MARIA ACOSTA CASTROREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
LUIS FERNANDO SOLORZANO RODRIGUEZREGIDORES(AS) PROPIETARIOS(AS)2016ACCIÓN CIUDADANAprincipal
CAROL JOHANNA ARBUROLA DELGADOREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
FREDDY ALBERTO SALAS RODRIGUEZREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
YOILY LINNETH TOALOMBO CARMONAREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
LEINER MIGUEL MOLINA PEREZREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
LILIBETH ANDREA CARMONA VILLALOBOSREGIDORES(AS) SUPLENTES2016ACCIÓN CIUDADANAsubstitute

6. Polling context

No local poll supplied.

7. Unresolved issues and sources

  • other · open

    Published province heading correction: {"issue": "Published province heading correction", "year": 2020, "area": "Heredia", "source_id": "S41377daad8", "resolution": "The amendment corrects CARTAGO to HEREDIA in the second table heading. It changes no votes, winners or seats; the original declaration is joined to Heredia."}

Sources

Cite this record

Center for Digital Democracy. “SAN MATEO — Municipal council.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CR-C-ALAJUELA-SAN-MATEO. Sources: costa-rica--url-ae6cfb21525f974d8912a00e, costa-rica--url-9b0bf8940eb485b811da317e, costa-rica--url-f8a1e09c9e89a7e5e9c55114, costa-rica--Sc1df243471, costa-rica--S9f25ea0c9f, costa-rica--Sfa91292290, costa-rica--Sf78d58d062, costa-rica--S79669f3e5d, costa-rica--S06946938a3.