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

Office briefing

Olaya — Mayor

Tracked current office. Identifiers stay separate from display names.

Colombia · Olaya / Antioquia · municipal · MayorCO-ALC-05501

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
Olaya / Antioquia
Next election
2027-10-31
Linked upcoming event
next-0b480dccdb17de798f4000a4
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

  • PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U68.8%
  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE31.2%
Results for event-abe5e4ece5ec546e36c2d358
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U · Jesus David Hernandez Londoño20050002colombia/Sdc3a3f1f89/20231,44468.8%UnknownRecorded
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Daniel Escudero Quiceno20130001colombia/Sdc3a3f1f89/202365431.2%UnknownRecorded

2019

Ordinary · Legal certification not established · list votes

  • COALICION ALCALDIA DE OLAYA-ANT. PARTIDO DE LA U Y PARTIDO CONSERVADOR - "UNIDOS POR OLAYA"69.4%
  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE30.6%
Results for event-6896371b7494492fe24b9585
Label / candidateParty codeVotesShareSeatsStatus
COALICION ALCALDIA DE OLAYA-ANT. PARTIDO DE LA U Y PARTIDO CONSERVADOR - "UNIDOS POR OLAYA" · Jose Humberto Cardona Gonzalez20190504colombia/S67eb704c85/20191,43969.4%UnknownRecorded
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Daniel Escudero Quiceno20130001colombia/S67eb704c85/201963430.6%UnknownRecorded

2015

Ordinary · Legal certification not established · list votes

  • PARTIDO CAMBIO RADICAL COLOMBIANO46.2%
  • COALICION ALCALDIA DE OLAYA. PARTIDO DE LA U Y PARTIDO LIBERAL41.9%
  • PARTIDO CONSERVADOR COLOMBIANO6.9%
  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE5.1%
Results for event-6836c1d9f4d638895cc0ef53
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO CAMBIO RADICAL COLOMBIANO · Ober De Jesus Hernandez Acevedo20030001colombia/S8164286948/201589246.2%UnknownRecorded
COALICION ALCALDIA DE OLAYA. PARTIDO DE LA U Y PARTIDO LIBERAL · Willian Humberto Gonzalez Gutierrez20150028colombia/S8164286948/201580941.9%UnknownRecorded
PARTIDO CONSERVADOR COLOMBIANO · Oscar Andres Pineda Gutierrez18490002colombia/S8164286948/20151336.9%UnknownRecorded
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Daniel Escudero Quiceno20130001colombia/S8164286948/2015985.1%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

0 (recorded zero)0–100 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=37.65490943755958, oldest_gap=4.296066252587991, previous_gap=38.832609744331876

pedersen volatility

Provisional volatility

69.42percentage 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

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=[[0,0,68.82745471877979,0,31.17254528122021,0,0,0,0,0,0],[0,0,0,0,30.58369512783406,0,0,0,0,0,69.41630487216594],[6.884057971014493,0,0,46.16977225672878,5.072463768115942,0,0,0,0,0,41.873706004140786]]

pedersen volatility

Provisional volatility

53.05percentage 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=[[0,0,68.82745471877979,0,31.17254528122021,0,0,0,0,0,0],[0,0,0,0,30.58369512783406,0,0,0,0,0,69.41630487216594],[6.884057971014493,0,0,46.16977225672878,5.072463768115942,0,0,0,0,0,41.873706004140786]]

pedersen volatility

Provisional volatility

61.24percentage 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

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=[[0,0,68.82745471877979,0,31.17254528122021,0,0,0,0,0,0],[0,0,0,0,30.58369512783406,0,0,0,0,0,69.41630487216594],[6.884057971014493,0,0,46.16977225672878,5.072463768115942,0,0,0,0,0,41.873706004140786]]

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. “Olaya — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CO-ALC-05501. Sources: colombia--url-44e0af24e3fef22401f2d269, colombia--url-f8cbad13a2c7112410d7a492, colombia--url-142631271ac95a7106b17681, colombia--Sdc3a3f1f89, colombia--S67eb704c85, colombia--S8164286948.