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

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Office briefing

SAN ISIDRO — Syndic and district council — shared ballot

Tracked current office. Identifiers stay separate from display names.

Costa Rica · SAN ISIDRO / ALAJUELA · other · Syndic and district council — shared ballotCR-D-ALAJUELA-ATENAS-SAN-ISIDRO

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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 ISIDRO / ALAJUELA
Next election
2028-02-06
Linked upcoming event
next-de82b3a337796e048de21181
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

  • PROGRESO SOCIAL DEMOCRÁTICO32.2%
  • UNIDAD SOCIAL CRISTIANA25.7%
  • AQUÍ COSTA RICA MANDA10.4%
  • NUEVA REPÚBLICA9.1%
  • LIBERACIÓN NACIONAL8.7%
  • LIBERAL PROGRESISTA7.8%
  • REPUBLICANO SOCIAL CRISTIANO6.2%
Results for event-b9dd282fc9aa8db6ab28cc46
Label / candidateParty codeVotesShareSeatsStatus
PROGRESO SOCIAL DEMOCRÁTICOcosta-rica/Sc1df243471/202439032.2%3Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/Sc1df243471/202431225.7%2Recorded
AQUÍ COSTA RICA MANDAcosta-rica/Sc1df243471/202412610.4%0 (recorded zero)Recorded
NUEVA REPÚBLICAcosta-rica/Sc1df243471/20241109.1%0 (recorded zero)Recorded
LIBERACIÓN NACIONALcosta-rica/Sc1df243471/20241058.7%0 (recorded zero)Recorded
LIBERAL PROGRESISTAcosta-rica/Sc1df243471/2024957.8%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sc1df243471/2024756.2%0 (recorded zero)Recorded

2020-02-02

Ordinary · Legal certification not established · list votes

  • UNIDAD SOCIAL CRISTIANA33.2%
  • UNIDOS PODEMOS14.4%
  • UNIÓN ATENIENSE14.0%
  • NUEVA GENERACIÓN13.5%
  • LIBERACIÓN NACIONAL8.9%
  • REPUBLICANO SOCIAL CRISTIANO7.5%
  • NUEVA REPÚBLICA5.1%
  • ACCIÓN CIUDADANA3.4%
Results for event-6c6af1170725f00ab2044551
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD SOCIAL CRISTIANAcosta-rica/Sfa91292290/202042333.2%2Recorded
UNIDOS PODEMOScosta-rica/Sfa91292290/202018414.4%1Recorded
UNIÓN ATENIENSEcosta-rica/Sfa91292290/202017914%1Recorded
NUEVA GENERACIÓNcosta-rica/Sfa91292290/202017213.5%1Recorded
LIBERACIÓN NACIONALcosta-rica/Sfa91292290/20201138.9%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sfa91292290/2020967.5%0 (recorded zero)Recorded
NUEVA REPÚBLICAcosta-rica/Sfa91292290/2020655.1%0 (recorded zero)Recorded
ACCIÓN CIUDADANAcosta-rica/Sfa91292290/2020433.4%0 (recorded zero)Recorded

2016-02-07

Ordinary · Legal certification not established · list votes

  • UNIDAD SOCIAL CRISTIANA29.2%
  • ACCIÓN CIUDADANA24.4%
  • LIBERACIÓN NACIONAL23.0%
  • REPUBLICANO SOCIAL CRISTIANO17.6%
  • FRENTE AMPLIO3.0%
  • MOVIMIENTO LIBERTARIO2.8%
Results for event-0371cd9b2065fdfddd55ef50
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD SOCIAL CRISTIANAcosta-rica/S79669f3e5d/201632329.2%2Recorded
ACCIÓN CIUDADANAcosta-rica/S79669f3e5d/201627024.4%1Recorded
LIBERACIÓN NACIONALcosta-rica/S79669f3e5d/201625423%1Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/S79669f3e5d/201619517.6%1Recorded
FRENTE AMPLIOcosta-rica/S79669f3e5d/2016333%0 (recorded zero)Recorded
MOVIMIENTO LIBERTARIOcosta-rica/S79669f3e5d/2016312.8%0 (recorded zero)Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

50.20–100 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=6.430338004946414, oldest_gap=4.792043399638338, previous_gap=18.74509803921569

pedersen volatility

Provisional volatility

43.95percentage 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=[[8.656224237427864,25.721352019785655,0,0,0,9.068425391591097,0,0,0,6.183017312448475,7.831821929101402,32.15169002473207,10.387469084913437],[8.862745098039216,33.1764705882353,3.372549019607843,0,0,5.098039215686274,0,0,0,7.529411764705882,0,0,41.96078431372549],[22.965641952983724,29.204339963833636,24.412296564195298,2.9837251356238697,0,0,2.8028933092224233,0,0,17.63110307414105,0,0,0]]

pedersen volatility

Provisional volatility

51.03percentage 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=[[8.656224237427864,25.721352019785655,0,0,0,9.068425391591097,0,0,0,6.183017312448475,7.831821929101402,32.15169002473207,10.387469084913437],[8.862745098039216,33.1764705882353,3.372549019607843,0,0,5.098039215686274,0,0,0,7.529411764705882,0,0,41.96078431372549],[22.965641952983724,29.204339963833636,24.412296564195298,2.9837251356238697,0,0,2.8028933092224233,0,0,17.63110307414105,0,0,0]]

pedersen volatility

Provisional volatility

47.49percentage 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=[[8.656224237427864,25.721352019785655,0,0,0,9.068425391591097,0,0,0,6.183017312448475,7.831821929101402,32.15169002473207,10.387469084913437],[8.862745098039216,33.1764705882353,3.372549019607843,0,0,5.098039215686274,0,0,0,7.529411764705882,0,0,41.96078431372549],[22.965641952983724,29.204339963833636,24.412296564195298,2.9837251356238697,0,0,2.8028933092224233,0,0,17.63110307414105,0,0,0]]

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?
LUIS ALBERTO RAMIREZ CHAVESSINDICATURA PROPIETARIO2024PROGRESO SOCIAL DEMOCRÁTICOprincipal
MARIA DEL CARMEN AGUILAR MONDRAGONSINDICATURA SUPLENTE2024PROGRESO SOCIAL DEMOCRÁTICOsubstitute
SEIDY ISABEL AGUILAR MONDRAGONCONCEJALÍAS DE DISTRITO PROPIETARIOS(AS)2024PROGRESO SOCIAL DEMOCRÁTICOprincipal
JORGE ARMANDO CHAVES MIRANDACONCEJALÍAS DE DISTRITO PROPIETARIOS(AS)2024PROGRESO SOCIAL DEMOCRÁTICOprincipal
ANA LORENA ARCE CUBEROCONCEJALÍAS DE DISTRITO PROPIETARIOS(AS)2024UNIDAD SOCIAL CRISTIANAprincipal
CARLOS MARIA RAMIREZ CHAVESCONCEJALÍAS DE DISTRITO PROPIETARIOS(AS)2024UNIDAD SOCIAL CRISTIANAprincipal
LIDIA MARIA RODRIGUEZ ARCECONCEJALÍAS DE DISTRITO SUPLENTES2024PROGRESO SOCIAL DEMOCRÁTICOsubstitute
ROY MORERA ARROYOCONCEJALÍAS DE DISTRITO SUPLENTES2024PROGRESO SOCIAL DEMOCRÁTICOsubstitute
LUZ MARINA CAMACHO SIBAJACONCEJALÍAS DE DISTRITO SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
SAUL RODRIGUEZ VARGASCONCEJALÍAS DE DISTRITO SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
WILLIAM MIRANDA GARITASÍNDICOS(AS) PROPIETARIO2020UNIDAD SOCIAL CRISTIANAprincipal
ANA MARITZA PORRAS MENASÍNDICOS(AS) SUPLENTE2020UNIDAD SOCIAL CRISTIANAsubstitute
TOBIAS GARITA MONESTELCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
GERARDA RAMIREZ CHACONCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020UNIDOS PODEMOSprincipal
ANABELLE DELGADO ARTAVIACONCEJALES DE DISTRITO PROPIETARIOS(AS)2020UNIÓN ATENIENSEprincipal
FRANCISCO JAVIER SUAREZ CHAVESCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020NUEVA GENERACIÓNprincipal
ANDREINA CHACON CHAVESCONCEJALES DE DISTRITO SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
MARIA ISABEL SOLIS MENACONCEJALES DE DISTRITO SUPLENTES2020UNIDOS PODEMOSsubstitute
JUAN JOSE VINDAS CAMPOSCONCEJALES DE DISTRITO SUPLENTES2020UNIÓN ATENIENSEsubstitute
WILLIAM MIRANDA GARITASÍNDICOS(AS) PROPIETARIO2016UNIDAD SOCIAL CRISTIANAprincipal
ANA MARITZA PORRAS MENASÍNDICOS(AS) SUPLENTE2016UNIDAD SOCIAL CRISTIANAsubstitute
GERARDO ARCE CHACONCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016UNIDAD SOCIAL CRISTIANAprincipal
EDUARDO CARRANZA MORACONCEJALES DE DISTRITO PROPIETARIOS(AS)2016ACCIÓN CIUDADANAprincipal
MARIA MATILDE SUAREZ NARANJOCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
ROGER CAMPOS NARANJOCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016REPUBLICANO SOCIAL CRISTIANOprincipal
EUSEBIO MENA NARANJOCONCEJALES DE DISTRITO SUPLENTES2016UNIDAD SOCIAL CRISTIANAsubstitute
MARIA DEL PILAR SALAZAR CASTROCONCEJALES DE DISTRITO SUPLENTES2016ACCIÓN CIUDADANAsubstitute
LIGIA RAMIREZ CAMPOSCONCEJALES DE DISTRITO SUPLENTES2016LIBERACIÓN NACIONALsubstitute
RONNY MAURICIO SUAREZ ESPINOZACONCEJALES DE DISTRITO SUPLENTES2016REPUBLICANO SOCIAL CRISTIANOsubstitute

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 ISIDRO — Syndic and district council — shared ballot.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CR-D-ALAJUELA-ATENAS-SAN-ISIDRO. Sources: costa-rica--url-ae6cfb21525f974d8912a00e, costa-rica--url-9b0bf8940eb485b811da317e, costa-rica--url-f8a1e09c9e89a7e5e9c55114, costa-rica--Sc1df243471, costa-rica--S51b819559c, costa-rica--Sfa91292290, costa-rica--S4f56e4854d, costa-rica--S79669f3e5d, costa-rica--S0287240cf5.