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

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Office briefing

TRONADORA — Syndic and district council — shared ballot

Tracked current office. Identifiers stay separate from display names.

Costa Rica · TRONADORA / GUANACASTE · other · Syndic and district council — shared ballotCR-D-GUANACASTE-TILARAN-TRONADORA

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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
TRONADORA / GUANACASTE
Next election
2028-02-06
Linked upcoming event
next-69dba16224e8978945968a76
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

  • UNIDAD SOCIAL CRISTIANA60.2%
  • LIBERACIÓN NACIONAL29.8%
  • AQUÍ COSTA RICA MANDA9.9%
Results for event-294bb6191728e4d0d606a4a4
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD SOCIAL CRISTIANAcosta-rica/Sc1df243471/202439460.2%4Recorded
LIBERACIÓN NACIONALcosta-rica/Sc1df243471/202419529.8%1Recorded
AQUÍ COSTA RICA MANDAcosta-rica/Sc1df243471/2024659.9%0 (recorded zero)Recorded

2020-02-02

Ordinary · Legal certification not established · list votes

  • UNIDAD SOCIAL CRISTIANA39.0%
  • LIBERACIÓN NACIONAL38.4%
  • NUEVA REPÚBLICA19.0%
  • RESTAURACIÓN NACIONAL3.6%
Results for event-e00571103507ac17a7219381
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD SOCIAL CRISTIANAcosta-rica/Sfa91292290/202024039%3Recorded
LIBERACIÓN NACIONALcosta-rica/Sfa91292290/202023638.4%1Recorded
NUEVA REPÚBLICAcosta-rica/Sfa91292290/202011719%1Recorded
RESTAURACIÓN NACIONALcosta-rica/Sfa91292290/2020223.6%0 (recorded zero)Recorded

2016-02-07

Ordinary · Legal certification not established · list votes

  • LIBERACIÓN NACIONAL34.3%
  • ACCIÓN CIUDADANA20.9%
  • UNIDAD SOCIAL CRISTIANA19.3%
  • MOVIMIENTO LIBERTARIO19.1%
  • REPUBLICANO SOCIAL CRISTIANO6.4%
Results for event-c5e5630c464b26a70e2c1211
Label / candidateParty codeVotesShareSeatsStatus
LIBERACIÓN NACIONALcosta-rica/S79669f3e5d/201624034.3%2Recorded
ACCIÓN CIUDADANAcosta-rica/S79669f3e5d/201614620.9%1Recorded
UNIDAD SOCIAL CRISTIANAcosta-rica/S79669f3e5d/201613519.3%1Recorded
MOVIMIENTO LIBERTARIOcosta-rica/S79669f3e5d/201613419.1%1Recorded
REPUBLICANO SOCIAL CRISTIANOcosta-rica/S79669f3e5d/2016456.4%0 (recorded zero)Recorded

4. Competition and volatility

competition index

Provisional imported-series CI

1.030–100 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=30.428134556574925, oldest_gap=13.428571428571427, previous_gap=0.6504065040650389

pedersen volatility

Provisional volatility

31.16percentage 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=[[29.81651376146789,60.24464831804281,0,0,0,0,0,0,0,0,0,0,9.938837920489297],[38.3739837398374,39.02439024390244,0,0,3.5772357723577235,19.024390243902438,0,0,0,0,0,0,0],[34.285714285714285,19.285714285714285,20.857142857142858,0,0,0,19.142857142857142,0,0,6.428571428571429,0,0,0]]

pedersen volatility

Provisional volatility

46.43percentage 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=[[29.81651376146789,60.24464831804281,0,0,0,0,0,0,0,0,0,0,9.938837920489297],[38.3739837398374,39.02439024390244,0,0,3.5772357723577235,19.024390243902438,0,0,0,0,0,0,0],[34.285714285714285,19.285714285714285,20.857142857142858,0,0,0,19.142857142857142,0,0,6.428571428571429,0,0,0]]

pedersen volatility

Provisional volatility

38.79percentage 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=[[29.81651376146789,60.24464831804281,0,0,0,0,0,0,0,0,0,0,9.938837920489297],[38.3739837398374,39.02439024390244,0,0,3.5772357723577235,19.024390243902438,0,0,0,0,0,0,0],[34.285714285714285,19.285714285714285,20.857142857142858,0,0,0,19.142857142857142,0,0,6.428571428571429,0,0,0]]

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?
MARIO ENRIQUE VARGAS VARGASSINDICATURAS PROPIETARIO2024UNIDAD SOCIAL CRISTIANAprincipal
ROSA MARIA CAMPOS CASTROSINDICATURAS SUPLENTE2024UNIDAD SOCIAL CRISTIANAsubstitute
FLORY CAMPOS CASTROCONCEJALÍAS DE DISTRITO PROPIETARIAS2024UNIDAD SOCIAL CRISTIANAprincipal
VINICIO ALFARO CASTILLOCONCEJALÍAS DE DISTRITO PROPIETARIAS2024UNIDAD SOCIAL CRISTIANAprincipal
SELENIA ARIAS CASTROCONCEJALÍAS DE DISTRITO PROPIETARIAS2024UNIDAD SOCIAL CRISTIANAprincipal
MARITZA MARIN SALASCONCEJALÍAS DE DISTRITO PROPIETARIAS2024LIBERACIÓN NACIONALprincipal
NAZARETH NAOMY PEREZ ALFAROCONCEJALÍAS DE DISTRITO SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
MAURICIO CARMONA RAMIREZCONCEJALÍAS DE DISTRITO SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
MARIA MERCEDES QUESADA MONTEROCONCEJALÍAS DE DISTRITO SUPLENTES2024UNIDAD SOCIAL CRISTIANAsubstitute
ANA BELLY MEJIAS HERRERACONCEJALÍAS DE DISTRITO SUPLENTES2024LIBERACIÓN NACIONALsubstitute
MANRIQUE JOSE ESPINOZA SOLANOSÍNDICOS(AS) PROPIETARIO2020UNIDAD SOCIAL CRISTIANAprincipal
MARIA ETELVINA ARRIETA GUTIERREZSÍNDICOS(AS) SUPLENTE2020UNIDAD SOCIAL CRISTIANAsubstitute
CATALINA MURILLO CAMPOSCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
LUIS ENRIQUE CONEJO MURILLOCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020UNIDAD SOCIAL CRISTIANAprincipal
ERICK ROBERTO RODRIGUEZ MEJIASCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020LIBERACIÓN NACIONALprincipal
JAIRO ALEJANDRO MORA BERMUDEZCONCEJALES DE DISTRITO PROPIETARIOS(AS)2020NUEVA REPÚBLICAprincipal
MAYKOL ANDRES GUTIERREZ CAMPOSCONCEJALES DE DISTRITO SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
LIGIA MARIA RODRIGUEZ MURILLOCONCEJALES DE DISTRITO SUPLENTES2020UNIDAD SOCIAL CRISTIANAsubstitute
YORLENY GONZALEZ SANCHEZCONCEJALES DE DISTRITO SUPLENTES2020LIBERACIÓN NACIONALsubstitute
YAHAIRA LUCRECIA JIMENEZ ALVARADOCONCEJALES DE DISTRITO SUPLENTES2020NUEVA REPÚBLICAsubstitute
NIXA MARGOTH ALVAREZ RAMIREZSÍNDICOS(AS) PROPIETARIA2016LIBERACIÓN NACIONALprincipal
FLORENTINO JIMENEZ RIVERASÍNDICOS(AS) SUPLENTE2016LIBERACIÓN NACIONALsubstitute
YORLENY GONZALEZ SANCHEZCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016LIBERACIÓN NACIONALprincipal
YELIXA SEGURA ZUMBADOCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016ACCIÓN CIUDADANAprincipal
JEUDY ALVAREZ ZUÑIGACONCEJALES DE DISTRITO PROPIETARIOS(AS)2016UNIDAD SOCIAL CRISTIANAprincipal
LUZ NALDA ROJAS BLANCOCONCEJALES DE DISTRITO PROPIETARIOS(AS)2016MOVIMIENTO LIBERTARIOprincipal
WAGNER ALFARO MEJIACONCEJALES DE DISTRITO SUPLENTES2016LIBERACIÓN NACIONALsubstitute
JHONNATHAN ALVARADO MEJIASCONCEJALES DE DISTRITO SUPLENTES2016ACCIÓN CIUDADANAsubstitute
TITO RAMON OBANDO LOPEZCONCEJALES DE DISTRITO SUPLENTES2016UNIDAD SOCIAL CRISTIANAsubstitute
LOREN ELIETTE GONZALEZ ALFAROCONCEJALES DE DISTRITO SUPLENTES2016MOVIMIENTO LIBERTARIOsubstitute

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. “TRONADORA — Syndic and district council — shared ballot.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CR-D-GUANACASTE-TILARAN-TRONADORA. Sources: costa-rica--url-ae6cfb21525f974d8912a00e, costa-rica--url-9b0bf8940eb485b811da317e, costa-rica--url-f8a1e09c9e89a7e5e9c55114, costa-rica--Sc1df243471, costa-rica--S824bd62330, costa-rica--Sfa91292290, costa-rica--S72c72d56b8, costa-rica--S79669f3e5d, costa-rica--Sa556305885.