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

Office briefing

San Luis De Gaceno — Mayor

Tracked current office. Identifiers stay separate from display names.

Colombia · San Luis De Gaceno / Boyaca · municipal · MayorCO-ALC-15667

Read the complete original research briefing

Expected ordinary election on the last Sunday of October; formal call and 2027 roster require refresh. CEDE/Registraduría ordinary returns V2. Shares exclude blank and invalid ballots. Changing coalition labels and current control are not harmonized. Repeats, annulments and opposition-seat acceptance require certification review.

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

Geography
San Luis De Gaceno / Boyaca
Next election
2027-10-31
Linked upcoming event
next-b15dd125a5587ff1e23e7ae7
Registry qualification
Unknown

2. How certain is that date?

2027-10-31 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2023

Ordinary · Legal certification not established · list votes

  • CON EL DESARROLLO GANAMOS TODOS50.5%
  • VAMOS PALANTE SAN LUIS DE GACENO49.5%
Results for event-c38a6f213b6b396474c16b2c
Label / candidateParty codeVotesShareSeatsStatus
CON EL DESARROLLO GANAMOS TODOS · Nelzon Garzon Chitiva20230987colombia/Sdc3a3f1f89/20231,60250.5%UnknownRecorded
VAMOS PALANTE SAN LUIS DE GACENO · Beyer Frandyney Lopez Caro20232287colombia/Sdc3a3f1f89/20231,56949.5%UnknownRecorded

2019

Ordinary · Legal certification not established · list votes

  • PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI58.0%
  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE42.0%
Results for event-470f44e1efd7ad3d3fc5bc59
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI · Juan Carlos Buitrago Salgado19910006colombia/S67eb704c85/20191,74658%UnknownRecorded
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Nelzon Garzon Chitiva20130001colombia/S67eb704c85/20191,26342%UnknownRecorded

2015

Ordinary · Legal certification not established · list votes

  • COALICION ALCALDIA DE SAN LUIS DE GACENO. PARTIDO DE LA U Y PARTIDO CAMBIO RADICAL55.4%
  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE44.6%
Results for event-6d741afa1be0f5d8ac94873f
Label / candidateParty codeVotesShareSeatsStatus
COALICION ALCALDIA DE SAN LUIS DE GACENO. PARTIDO DE LA U Y PARTIDO CAMBIO RADICAL · Milton Oswaldo Fernandez Alfonso20150116colombia/S8164286948/20151,71255.4%UnknownRecorded
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Baudilio Cardenas Vaca20130001colombia/S8164286948/20151,38144.6%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

67.450–100 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=1.040681173131503, oldest_gap=10.70158422243776, previous_gap=16.0518444666002

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Ten exact standalone national-party labels. Mixed coalitions, unidentified CEDE codes and other lists stay Other. Changes in coalition participation are not resolved into constituent-party votes. Geographic and actual-event audits remain open. 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["Conservador","Liberal","La U","Cambio Radical","Centro Democratico","Alianza Verde","ASI","MAIS","Polo","AICO","Other"], interval=Latest interval, vectors=[null,[0,0,0,0,41.9740777666999,0,58.0259222333001,0,0,0,0],[0,0,0,0,44.64920788878112,0,0,0,0,0,55.35079211121888]]

pedersen volatility

Provisional volatility

58.03percentage points

Grouped Pedersen lower bound (percentage points). Ten exact standalone national-party labels. Mixed coalitions, unidentified CEDE codes and other lists stay Other. Changes in coalition participation are not resolved into constituent-party votes. Geographic and actual-event audits remain open. 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=["Conservador","Liberal","La U","Cambio Radical","Centro Democratico","Alianza Verde","ASI","MAIS","Polo","AICO","Other"], interval=Previous interval, vectors=[null,[0,0,0,0,41.9740777666999,0,58.0259222333001,0,0,0,0],[0,0,0,0,44.64920788878112,0,0,0,0,0,55.35079211121888]]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Ten exact standalone national-party labels. Mixed coalitions, unidentified CEDE codes and other lists stay Other. Changes in coalition participation are not resolved into constituent-party votes. Geographic and actual-event audits remain open. 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 · Comparable grouped vectors unavailable for this interval

Method pedersen.grouped.v1. Inputs: groups=["Conservador","Liberal","La U","Cambio Radical","Centro Democratico","Alianza Verde","ASI","MAIS","Polo","AICO","Other"], interval=Both intervals mean, vectors=[null,[0,0,0,0,41.9740777666999,0,58.0259222333001,0,0,0,0],[0,0,0,0,44.64920788878112,0,0,0,0,0,55.35079211121888]]

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.

National context is listed on the polling page. It is not a local forecast.

7. Unresolved issues and sources

Expected ordinary election on the last Sunday of October; formal call and 2027 roster require refresh. CEDE/Registraduría ordinary returns V2. Shares exclude blank and invalid ballots. Changing coalition labels and current control are not harmonized. Repeats, annulments and opposition-seat acceptance require certification review. Six 2023 assemblies remain absent: Amazonas, Guainía, Huila, Risaralda, Vaupés and Vichada. Cali’s 37 JAL boards and dated membership rosters are registered; the national JAL register, three-cycle votes and replacement-event final returns remain incomplete. Twenty mixed-list-type histories, Bogotá and Cali 2015 partial counts and candidate/elected-flag inconsistencies require reconciliation. The national historical portal rejected this browser through security screening. Full legal seat allocation is separate from candidate flags and directory headcounts.

    Sources

    Cite this record

    Center for Digital Democracy. “San Luis De Gaceno — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CO-ALC-15667. Sources: colombia--url-44e0af24e3fef22401f2d269, colombia--url-f8cbad13a2c7112410d7a492, colombia--url-142631271ac95a7106b17681, colombia--Sdc3a3f1f89, colombia--S67eb704c85, colombia--S8164286948.