Skip to observatory content

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

Office briefing

Sonson — Mayor

Tracked current office. Identifiers stay separate from display names.

Colombia · Sonson / Antioquia · municipal · MayorCO-ALC-05756

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
Sonson / Antioquia
Next election
2027-10-31
Linked upcoming event
next-437a1eead699da19fe901dd6
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

  • EL PROGRESO CONTINUA40.8%
  • PARTIDO CONSERVADOR COLOMBIANO40.5%
  • TRANSFORMACION TOTAL14.7%
  • CREEMOS4.0%
Results for event-1d1cc83956718634bb1c3834
Label / candidateParty codeVotesShareSeatsStatus
EL PROGRESO CONTINUA · Juan Diego Zuluaga Pulgarin20231147colombia/Sdc3a3f1f89/20236,07840.8%UnknownRecorded
PARTIDO CONSERVADOR COLOMBIANO · Nelson Fernando Gomez Gomez18490002colombia/Sdc3a3f1f89/20236,04040.5%UnknownRecorded
TRANSFORMACION TOTAL · Cesar Augusto Molina Jimenez20232081colombia/Sdc3a3f1f89/20232,19114.7%UnknownRecorded
CREEMOS · Adriana Patricia Patiño Hernandez20150003colombia/Sdc3a3f1f89/20235944%UnknownRecorded

2019

Ordinary · Legal certification not established · list votes

  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE54.3%
  • PARTIDO CONSERVADOR COLOMBIANO27.4%
  • PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI13.5%
  • COALICION ALCALDIA DE SONSON-ANT. PARTIDO LIBERAL Y PARTIDO COLOMBIA RENACIENTE - "UNIDOS SONSON AVANZA"4.2%
  • PARTIDO CAMBIO RADICAL COLOMBIANO0.6%
Results for event-1bc1f216280c5056da00e4c6
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Edwin Andres Montes Henao20130001colombia/S67eb704c85/20198,33354.3%UnknownRecorded
PARTIDO CONSERVADOR COLOMBIANO · Carlos Alberto Cardona Escobar18490002colombia/S67eb704c85/20194,19727.4%UnknownRecorded
PARTIDO ALIANZA SOCIAL INDEPENDIENTE - ASI · Carlos Alberto Rios Jimenez19910006colombia/S67eb704c85/20192,07613.5%UnknownRecorded
COALICION ALCALDIA DE SONSON-ANT. PARTIDO LIBERAL Y PARTIDO COLOMBIA RENACIENTE - "UNIDOS SONSON AVANZA" · Cesar Augusto Molina Jimenez20190407colombia/S67eb704c85/20196504.2%UnknownRecorded
PARTIDO CAMBIO RADICAL COLOMBIANO · Ruben Suarez Bustamante20030001colombia/S67eb704c85/2019880.6%UnknownRecorded

2015

Ordinary · Legal certification not established · list votes

  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE47.5%
  • PARTIDO CONSERVADOR COLOMBIANO29.0%
  • PARTIDO CAMBIO RADICAL COLOMBIANO15.1%
  • PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U8.4%
Results for event-5749f8a5f563c56ebbe983e7
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Obed De Jesus Zuluaga Henao20130001colombia/S8164286948/20156,70347.5%UnknownRecorded
PARTIDO CONSERVADOR COLOMBIANO · Bernardo Antonio Marulanda Manrique18490002colombia/S8164286948/20154,09629%UnknownRecorded
PARTIDO CAMBIO RADICAL COLOMBIANO · Jenny Victoria Patiño Betancur20030001colombia/S8164286948/20152,12715.1%UnknownRecorded
PARTIDO SOCIAL DE UNIDAD NACIONAL - PARTIDO DE LA U · Jesus Antonio Giraldo Bernal20050002colombia/S8164286948/20151,1848.4%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

49.560–100 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=0.25498221834530455, oldest_gap=18.476257973068744, previous_gap=26.955161626694473

pedersen volatility

Provisional volatility

68.41percentage 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=[[40.52875260014762,0,0,0,0,0,0,0,0,0,59.47124739985239],[27.352711157455683,0,0,0.5735140771637122,54.307872784150156,0,13.529718456725757,0,0,0,4.236183524504693],[29.029057406094967,0,8.391211906449326,15.074415308291991,47.50531537916371,0,0,0,0,0,0]]

pedersen volatility

Provisional volatility

24.57percentage 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=[[40.52875260014762,0,0,0,0,0,0,0,0,0,59.47124739985239],[27.352711157455683,0,0,0.5735140771637122,54.307872784150156,0,13.529718456725757,0,0,0,4.236183524504693],[29.029057406094967,0,8.391211906449326,15.074415308291991,47.50531537916371,0,0,0,0,0,0]]

pedersen volatility

Provisional volatility

46.49percentage 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=[[40.52875260014762,0,0,0,0,0,0,0,0,0,59.47124739985239],[27.352711157455683,0,0,0.5735140771637122,54.307872784150156,0,13.529718456725757,0,0,0,4.236183524504693],[29.029057406094967,0,8.391211906449326,15.074415308291991,47.50531537916371,0,0,0,0,0,0]]

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.

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. “Sonson — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CO-ALC-05756. Sources: colombia--url-44e0af24e3fef22401f2d269, colombia--url-f8cbad13a2c7112410d7a492, colombia--url-142631271ac95a7106b17681, colombia--Sdc3a3f1f89, colombia--S67eb704c85, colombia--S8164286948.