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

Office briefing

Iza — Mayor

Tracked current office. Identifiers stay separate from display names.

Colombia · Iza / Boyaca · municipal · MayorCO-ALC-15362

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
Iza / Boyaca
Next election
2027-10-31
Linked upcoming event
next-3bd1d94ead54d9591141ea44
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

  • NUESTRO PROYECTO ES IZA50.9%
  • PARTIDO CONSERVADOR - ASI34.8%
  • PARTIDO DE LA U - CAMBIO RADICAL14.3%
Results for event-505e1fefc93a38427b89983d
Label / candidateParty codeVotesShareSeatsStatus
NUESTRO PROYECTO ES IZA · Edgar Alexander Avella Florez20231590colombia/Sdc3a3f1f89/202392350.9%UnknownRecorded
PARTIDO CONSERVADOR - ASI · Sandra Milena Avella Africano20230341colombia/Sdc3a3f1f89/202363234.8%UnknownRecorded
PARTIDO DE LA U - CAMBIO RADICAL · Diego Fernando Uyasaba Moreno20230342colombia/Sdc3a3f1f89/202326014.3%UnknownRecorded

2019

Ordinary · Legal certification not established · list votes

  • COALICION ALCALDIA DE IZA-BOY. PARTIDO CENTRO DEMOCRATICO Y PARTIDO CONSERVADOR - "SUMATE POR IZA COMPROMISO DE TODOS"57.9%
  • COALICION ALCALDIA DE IZA-BOY. PARTIDO CAMBIO RADICAL Y PARTIDO DE LA U - "GARANTIA DE UN BUEN GOBIERNO"42.1%
Results for event-7589e3f57a7da466e847ae5c
Label / candidateParty codeVotesShareSeatsStatus
COALICION ALCALDIA DE IZA-BOY. PARTIDO CENTRO DEMOCRATICO Y PARTIDO CONSERVADOR - "SUMATE POR IZA COMPROMISO DE TODOS" · Robinson Leandro Salamanca Rincon20190437colombia/S67eb704c85/201997257.9%UnknownRecorded
COALICION ALCALDIA DE IZA-BOY. PARTIDO CAMBIO RADICAL Y PARTIDO DE LA U - "GARANTIA DE UN BUEN GOBIERNO" · Marco Lino Suarez Torres20190438colombia/S67eb704c85/201970742.1%UnknownRecorded

2015

Ordinary · Legal certification not established · list votes

  • PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE72.0%
  • PARTIDO CAMBIO RADICAL COLOMBIANO28.0%
Results for event-7beba2be6ad06686323acc84
Label / candidateParty codeVotesShareSeatsStatus
PARTIDO CENTRO DEMOCRATICO - MANO FIRME CORAZON GRANDE · Diego Armando Lopez Wanumen20130001colombia/S8164286948/20151,16372%UnknownRecorded
PARTIDO CAMBIO RADICAL COLOMBIANO · Ramon Octavio Lopez Colmenares20030001colombia/S8164286948/201545228%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

6.210–100 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=16.03305785123967, oldest_gap=44.02476780185759, previous_gap=15.78320428826683

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,null,[0,0,0,27.987616099071207,72.0123839009288,0,0,0,0,0,0]]

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: Previous 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=Previous interval, vectors=[null,null,[0,0,0,27.987616099071207,72.0123839009288,0,0,0,0,0,0]]

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,null,[0,0,0,27.987616099071207,72.0123839009288,0,0,0,0,0,0]]

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. “Iza — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/CO-ALC-15362. Sources: colombia--url-44e0af24e3fef22401f2d269, colombia--url-f8cbad13a2c7112410d7a492, colombia--url-142631271ac95a7106b17681, colombia--Sdc3a3f1f89, colombia--S67eb704c85, colombia--S8164286948.