Office briefing
La Union — Mayor
Tracked current office. Identifiers stay separate from display names.
Colombia · La Union / Antioquia · municipal · MayorCO-ALC-05400
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
- La Union / Antioquia
- Next election
- 2027-10-31
- Linked upcoming event
- next-6f2fca90c9b8f24cd1cb733d
- 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
- COALICION ALCALDIA DE UNION PANAMERICANA-CHOC. PARTIDO COLOMBIA RENACIENTE Y PARTIDO CONSERVADOR - "LA UNION SOMOS TODOS"46.5%
- ES HORA DE AVANZAR22.0%
- LA UNION ES LA CLAVE16.4%
- PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U15.1%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| COALICION ALCALDIA DE UNION PANAMERICANA-CHOC. PARTIDO COLOMBIA RENACIENTE Y PARTIDO CONSERVADOR - "LA UNION SOMOS TODOS" · Carmen Judith Valencia Moreno | 20190796colombia/Sdc3a3f1f89/2023 | 6,230 | 46.5% | Unknown | Recorded |
| ES HORA DE AVANZAR · Diego Alexander Tibaquira Castrillon | 20231202colombia/Sdc3a3f1f89/2023 | 2,946 | 22% | Unknown | Recorded |
| LA UNION ES LA CLAVE · Eleuterio De Jesus Martinez Valencia | 20231458colombia/Sdc3a3f1f89/2023 | 2,204 | 16.4% | Unknown | Recorded |
| PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U · Hugo Botero Lopez | 20050002colombia/Sdc3a3f1f89/2023 | 2,023 | 15.1% | Unknown | Recorded |
2019
Ordinary · Legal certification not established · list votes
- COALICION ALCALDIA DE LA UNION-ANT. PARTIDO LIBERAL Y ALIANZA SOCIAL INDEPENDIENTE - "LA UNION EN BUENAS MANOS"32.9%
- PARTIDO CAMBIO RADICAL COLOMBIANO21.7%
- PARTIDO ALIANZA VERDE17.2%
- PARTIDO CONSERVADOR COLOMBIANO15.1%
- PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE8.7%
- PARTIDO COLOMBIA RENACIENTE3.3%
- POLO DEMOCRATICO ALTERNATIVO1.1%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| COALICION ALCALDIA DE LA UNION-ANT. PARTIDO LIBERAL Y ALIANZA SOCIAL INDEPENDIENTE - "LA UNION EN BUENAS MANOS" · Edgar Alexander Osorio Londoño | 20190494colombia/S67eb704c85/2019 | 4,009 | 32.9% | Unknown | Recorded |
| PARTIDO CAMBIO RADICAL COLOMBIANO · Eleuterio De Jesus Martinez Valencia | 20030001colombia/S67eb704c85/2019 | 2,647 | 21.7% | Unknown | Recorded |
| PARTIDO ALIANZA VERDE · Diego Alexander Tibaquira Castrillon | 20090002colombia/S67eb704c85/2019 | 2,092 | 17.2% | Unknown | Recorded |
| PARTIDO CONSERVADOR COLOMBIANO · Carlos Andres Marulanda Garcia | 18490002colombia/S67eb704c85/2019 | 1,840 | 15.1% | Unknown | Recorded |
| PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Eduardo Antonio Castro Bedoya | 20130001colombia/S67eb704c85/2019 | 1,054 | 8.7% | Unknown | Recorded |
| PARTIDO COLOMBIA RENACIENTE · Carlos Mario Rios Guzman | 20180046colombia/S67eb704c85/2019 | 405 | 3.3% | Unknown | Recorded |
| POLO DEMOCRATICO ALTERNATIVO · Sebastian Cardona Henao | 20050001colombia/S67eb704c85/2019 | 135 | 1.1% | Unknown | Recorded |
2015
Ordinary · Legal certification not established · list votes
- PARTIDO OPCION CIUDADANA24.0%
- PARTIDO CAMBIO RADICAL COLOMBIANO23.9%
- PARTIDO LIBERAL COLOMBIANO22.2%
- PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE15.6%
- PARTIDO ALIANZA VERDE8.3%
- PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI5.9%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| PARTIDO OPCION CIUDADANA · Hugo Botero Lopez | 20090001colombia/S8164286948/2015 | 2,467 | 24% | Unknown | Recorded |
| PARTIDO CAMBIO RADICAL COLOMBIANO · Eleuterio De Jesus Martinez Valencia | 20030001colombia/S8164286948/2015 | 2,457 | 23.9% | Unknown | Recorded |
| PARTIDO LIBERAL COLOMBIANO · Carlos Alberto Franco Arroyave | 18480001colombia/S8164286948/2015 | 2,280 | 22.2% | Unknown | Recorded |
| PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Fernando Jaime Botero Campuzano | 20130001colombia/S8164286948/2015 | 1,602 | 15.6% | Unknown | Recorded |
| PARTIDO ALIANZA VERDE · Pablo Pelaez Mejia | 20090002colombia/S8164286948/2015 | 855 | 8.3% | Unknown | Recorded |
| PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI · Natalia Duque Alzate | 19910006colombia/S8164286948/2015 | 608 | 5.9% | Unknown | Recorded |
4. Competition and volatility
competition index
Provisional imported-series CI9.670–100 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=24.50197716929046, oldest_gap=0.09738046547862567, previous_gap=11.180430142833693
pedersen volatility
Provisional volatility63.77percentage 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=[[0,0,15.093635753189584,0,0,0,0,0,0,0,84.90636424681043],[15.104252175340667,0,0,21.728780167460187,8.652109670004926,17.17287801674602,0,0,1.1081924150385816,0,36.23378755540963],[0,22.202746129126496,0,23.926380368098158,15.600350569675722,8.326029798422436,5.920732301100399,0,0,0,24.023760833576784]]
pedersen volatility
Provisional volatility37.27percentage 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=[[0,0,15.093635753189584,0,0,0,0,0,0,0,84.90636424681043],[15.104252175340667,0,0,21.728780167460187,8.652109670004926,17.17287801674602,0,0,1.1081924150385816,0,36.23378755540963],[0,22.202746129126496,0,23.926380368098158,15.600350569675722,8.326029798422436,5.920732301100399,0,0,0,24.023760833576784]]
pedersen volatility
Provisional volatility50.52percentage 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=[[0,0,15.093635753189584,0,0,0,0,0,0,0,84.90636424681043],[15.104252175340667,0,0,21.728780167460187,8.652109670004926,17.17287801674602,0,0,1.1081924150385816,0,36.23378755540963],[0,22.202746129126496,0,23.926380368098158,15.600350569675722,8.326029798422436,5.920732301100399,0,0,0,24.023760833576784]]
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
- Colombia: https://doi.org/10.71590/R2KLKI/BWJDHW · rights unknown
- Colombia: https://doi.org/10.71590/R2KLKI/QVG0NB · rights unknown
- Colombia: https://doi.org/10.71590/R2KLKI/UJ4B6K · rights unknown
- Colombia: CEDE Colombia 2023 alcaldia · rights unknown
- Colombia: CEDE Colombia 2019 alcaldia · rights unknown
- Colombia: CEDE Colombia 2015 alcaldia · rights unknown
Cite this record
Center for Digital Democracy. “La Union — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CO-ALC-05400. Sources: colombia--url-44e0af24e3fef22401f2d269, colombia--url-f8cbad13a2c7112410d7a492, colombia--url-142631271ac95a7106b17681, colombia--Sdc3a3f1f89, colombia--S67eb704c85, colombia--S8164286948.