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

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Office briefing

ATENAS — Municipal council

Tracked current office. Identifiers stay separate from display names.

Costa Rica · ATENAS / ALAJUELA · municipal · Municipal councilCR-C-ALAJUELA-ATENAS

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
ATENAS / ALAJUELA
Next election
2028-02-06
Linked upcoming event
next-f61d9fe2bd946ab889f9bd8b
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 DEMOCRÁTICO31.3%
  • UNIDAD SOCIAL CRISTIANA17.0%
  • REPUBLICANO SOCIAL CRISTIANO13.8%
  • LIBERACIÓN NACIONAL11.4%
  • LIBERAL PROGRESISTA10.0%
  • AQUÍ COSTA RICA MANDA6.7%
  • NUEVA REPÚBLICA5.3%
  • NUEVA GENERACIÓN4.2%
  • UNIDOS PODEMOS0.5%
Results for event-3ea32aba331abe31ff9a60fc
Label / candidateParty codeVotesShareSeatsStatus
PROGRESO SOCIAL DEMOCRÁTICOcosta-rica/Sc1df243471/20243,47031.3%2Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/Sc1df243471/20241,88817%1Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sc1df243471/20241,52713.8%1Recorded
LIBERACIÓN NACIONALcosta-rica/Sc1df243471/20241,25911.4%1Recorded
LIBERAL PROGRESISTAcosta-rica/Sc1df243471/20241,10510%0 (recorded zero)Recorded
AQUÍ COSTA RICA MANDAcosta-rica/Sc1df243471/20247446.7%0 (recorded zero)Recorded
NUEVA REPÚBLICAcosta-rica/Sc1df243471/20245875.3%0 (recorded zero)Recorded
NUEVA GENERACIÓNcosta-rica/Sc1df243471/20244614.2%0 (recorded zero)Recorded
UNIDOS PODEMOScosta-rica/Sc1df243471/2024510.5%0 (recorded zero)Recorded

2020-02-02

Ordinary · Legal certification not established · list votes

  • UNIDAD SOCIAL CRISTIANA25.0%
  • LIBERACIÓN NACIONAL19.1%
  • UNIÓN ATENIENSE16.7%
  • NUEVA GENERACIÓN11.2%
  • NUEVA REPUBLICA9.5%
  • UNIDOS PODEMOS6.2%
  • ACCIÓN CIUDADANA6.0%
  • REPUBLICANO SOCIAL CRISTIANO5.5%
  • RESTAURACIÓN NACIONAL0.8%
Results for event-44770ba5859aec0c93efed1e
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD SOCIAL CRISTIANAcosta-rica/Sfa91292290/20202,86125%2Recorded
LIBERACIÓN NACIONALcosta-rica/Sfa91292290/20202,19219.1%1Recorded
UNIÓN ATENIENSEcosta-rica/Sfa91292290/20201,91816.7%1Recorded
NUEVA GENERACIÓNcosta-rica/Sfa91292290/20201,28511.2%1Recorded
NUEVA REPUBLICAcosta-rica/Sfa91292290/20201,0929.5%0 (recorded zero)Recorded
UNIDOS PODEMOScosta-rica/Sfa91292290/20207056.2%0 (recorded zero)Recorded
ACCIÓN CIUDADANAcosta-rica/Sfa91292290/20206886%0 (recorded zero)Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/Sfa91292290/20206275.5%0 (recorded zero)Recorded
RESTAURACIÓN NACIONALcosta-rica/Sfa91292290/2020860.8%0 (recorded zero)Recorded

2016-02-07

Ordinary · Legal certification not established · list votes

  • LIBERACIÓN NACIONAL27.2%
  • ACCIÓN CIUDADANA25.9%
  • UNIDAD SOCIAL CRISTIANA25.5%
  • REPUBLICANO SOCIAL CRISTIANO12.1%
  • FRENTE AMPLIO5.4%
  • MOVIMIENTO LIBERTARIO3.8%
Results for event-ddc6d4146323618f4727b5cf
Label / candidateParty codeVotesShareSeatsStatus
LIBERACIÓN NACIONALcosta-rica/S79669f3e5d/20162,56327.2%2Recorded
ACCIÓN CIUDADANAcosta-rica/S79669f3e5d/20162,43825.9%1Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/S79669f3e5d/20162,40125.5%1Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/S79669f3e5d/20161,14212.1%1Recorded
FRENTE AMPLIOcosta-rica/S79669f3e5d/20165105.4%0 (recorded zero)Recorded
MOVIMIENTO LIBERTARIOcosta-rica/S79669f3e5d/20163543.8%0 (recorded zero)Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

47.790–100 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=14.262531554273352, oldest_gap=1.328656462585034, previous_gap=5.8407543216343605

pedersen volatility

Provisional volatility

49.54percentage 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=[[11.350522899386945,17.02127659574468,0,0,0,5.292102416155788,0,0,0,13.766678687342228,9.962134871979805,31.283808150018032,11.323476379372522],[19.137419242186137,24.978173563820498,6.0066352365985685,0,0.7508294045748211,9.533787323205868,0,0,0,5.474070193818753,0,0,34.11908503579536],[27.24277210884354,25.520833333333332,25.914115646258505,5.420918367346939,0,0,3.7627551020408165,0,0,12.138605442176871,0,0,0]]

pedersen volatility

Provisional volatility

44.4percentage 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=[[11.350522899386945,17.02127659574468,0,0,0,5.292102416155788,0,0,0,13.766678687342228,9.962134871979805,31.283808150018032,11.323476379372522],[19.137419242186137,24.978173563820498,6.0066352365985685,0,0.7508294045748211,9.533787323205868,0,0,0,5.474070193818753,0,0,34.11908503579536],[27.24277210884354,25.520833333333332,25.914115646258505,5.420918367346939,0,0,3.7627551020408165,0,0,12.138605442176871,0,0,0]]

pedersen volatility

Provisional volatility

46.97percentage 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=[[11.350522899386945,17.02127659574468,0,0,0,5.292102416155788,0,0,0,13.766678687342228,9.962134871979805,31.283808150018032,11.323476379372522],[19.137419242186137,24.978173563820498,6.0066352365985685,0,0.7508294045748211,9.533787323205868,0,0,0,5.474070193818753,0,0,34.11908503579536],[27.24277210884354,25.520833333333332,25.914115646258505,5.420918367346939,0,0,3.7627551020408165,0,0,12.138605442176871,0,0,0]]

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?
ANA LUCRECIA ARGUELLO DELGADOREGIDURÍAS PROPIETARIAS2024PROGRESO SOCIAL DEMOCRÁTICOprincipal
EVANS ARGUEDAS VALERIOREGIDURÍAS PROPIETARIAS2024PROGRESO SOCIAL DEMOCRÁTICOprincipal
YOJANA AGUILAR SUAREZREGIDURÍAS PROPIETARIAS2024UNIDAD SOCIAL CRISTIANAprincipal
ISAAC ORTIZ NUÑEZREGIDURÍAS PROPIETARIAS2024REPUBLICANO SOCIAL CRISTIANOprincipal
ROY ARIAS ROJASREGIDURÍAS PROPIETARIAS2024LIBERACIÓN NACIONALprincipal
GLENDA RODRIGUEZ CHAVESREGIDURÍAS SUPLENTES2024PROGRESO SOCIAL DEMOCRÁTICOsubstitute
CARLOS LUIS ALVARADO VARGASREGIDURÍAS SUPLENTES2024PROGRESO SOCIAL DEMOCRÁTICOsubstitute
JUDITH VIQUEZ ZUÑIGAREGIDURÍAS SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
GILBERTH ANDRES VIQUEZ VIQUEZREGIDURÍAS SUPLENTES2024REPUBLICANO SOCIAL CRISTIANOsubstitute
SEBASTIAN VIQUEZ SANABRIAREGIDURÍAS SUPLENTES2024LIBERACIÓN NACIONALsubstitute
DIEGO ALONSO GONZALEZ MORALESREGIDORES(AS) PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
ESTER AMALIA GONZALEZ GARCIAREGIDORES(AS) PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
JUAN CARLOS DENGO GONZALEZREGIDORES(AS) PROPIETARIOS(AS)2020LIBERACIÓN NACIONALprincipal
URIEL ALFONSO DELGADO RAMIREZREGIDORES(AS) PROPIETARIOS(AS)2020UNIÓN ATENIENSEprincipal
RONALD FRANCISCO RAMIREZ GARITAREGIDORES(AS) PROPIETARIOS(AS)2020NUEVA GENERACIÓNprincipal
DANILO VASQUEZ TRIGUEROSREGIDORES(AS) SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
ELISA MARIA CALDERON MONTEROREGIDORES(AS) SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
CARLOS MANUEL SALAZAR LEONREGIDORES(AS) SUPLENTES2020LIBERACIÓN NACIONALsubstitute
XIOMARA CHAVES GARITAREGIDORES(AS) SUPLENTES2020UNIÓN ATENIENSEsubstitute
LEONARDO BARQUERO RAMIREZREGIDORES(AS) SUPLENTES2020NUEVA GENERACIÓNsubstitute
ALFREDO BOLAÑOS SANCHEZREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
SILVIA ELENA RAMIREZ RODRIGUEZREGIDORES(AS) PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
ISAAC ORTIZ NUÑEZREGIDORES(AS) PROPIETARIOS(AS)2016ACCIÓN CIUDADANAprincipal
OSCAR JIMENEZ SALASREGIDORES(AS) PROPIETARIOS(AS)2016UNIDAD SOCIAL CRISTIANAprincipal
ANALIVE ESPINOZA MIRANDAREGIDORES(AS) PROPIETARIOS(AS)2016REPUBLICANO SOCIAL CRISTIANOprincipal
ANA MARCELA VILLEGAS GONZALEZREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
RAUL ALFREDO JIMENEZ VASQUEZREGIDORES(AS) SUPLENTES2016LIBERACIÓN NACIONALsubstitute
ROSEIDY RAMIREZ HERNANDEZREGIDORES(AS) SUPLENTES2016ACCIÓN CIUDADANAsubstitute
DIEGO ALONSO GONZALEZ MORALESREGIDORES(AS) SUPLENTES2016UNIDAD SOCIAL CRISTIANAsubstitute
DAVID ALBERTO CARMONA COTOREGIDORES(AS) 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. “ATENAS — Municipal council.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CR-C-ALAJUELA-ATENAS. 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.