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

Office briefing

Tres Isletas — Mayor

Tracked current office. Identifiers stay separate from display names.

Argentina · Tres Isletas / Chaco · municipal · MayorAR-CH-45-M

Read the complete original research briefing

Ordinary 2027 cohort provisionally registered from the 70-municipality 2023 election archive. Fontana 2024 replacement is a separate completed event. Final current control and later exceptional calls require review.

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

Geography
Tres Isletas / Chaco
Next election
2027; formal call pending
Linked upcoming event
next-6aa5e2a9734b26562b8cc441
Registry qualification
Unknown

2. How certain is that date?

2027; formal call pending is expected (not formally called). Year precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2023-09-17

unknown · Legal certification not established · list votes

  • FRENTE CHAQUEÑO49.4%
  • JUNTOS POR EL CAMBIO30.5%
  • NUEVO ESPACIO DE PARTICIPACION17.1%
  • LIBERTARIOS EN ACCION1.8%
  • PARTIDO DEL OBRERO0.7%
  • FRENTE INTEGRADOR0.5%
  • UNIDOS POR LA GENTE0.1%
Results for event-337d52ab6082afef496f3cff
Label / candidateParty codeVotesShareSeatsStatus
FRENTE CHAQUEÑO0652argentina/S3b415ff3cead/20237,11449.4%UnknownRecorded
JUNTOS POR EL CAMBIO0653argentina/S3b415ff3cead/20234,38830.5%UnknownRecorded
NUEVO ESPACIO DE PARTICIPACION0606argentina/S3b415ff3cead/20232,46017.1%UnknownRecorded
LIBERTARIOS EN ACCION0668argentina/S3b415ff3cead/20232611.8%UnknownRecorded
PARTIDO DEL OBRERO0071argentina/S3b415ff3cead/20231020.7%UnknownRecorded
FRENTE INTEGRADOR0610argentina/S3b415ff3cead/2023730.5%UnknownRecorded
UNIDOS POR LA GENTE0669argentina/S3b415ff3cead/2023110.1%UnknownRecorded

2019-10-13

unknown · Legal certification not established · list votes

  • CHACO SOMOS TODOS29.5%
  • PARTIDO DEL TRABAJO Y LA EQUIDAD27.9%
  • FRENTE CHAQUEÑO27.0%
  • FRENTE CHACO AVANZA7.6%
  • PARTIDO CORRIENTE MARTIN FIERRO3.6%
  • CIUDADANOS A GOBERNAR1.3%
  • ACCION CHAQUEÑA1.3%
  • NUEVO ESPACIO DE PARTICIPACION0.8%
  • MOVIMIENTO POLÍTICO, SOCIAL Y CULTURAL P0.6%
  • FRENTE INTEGRADOR0.3%
  • MOVIMIENTO IZQUIERDA JUSTICIA Y DIGNIDAD0.1%
Results for event-805fbeee0b662ec974ddd4bd
Label / candidateParty codeVotesShareSeatsStatus
CHACO SOMOS TODOS0653argentina/S9119824cc8af/20194,31729.5%UnknownRecorded
PARTIDO DEL TRABAJO Y LA EQUIDAD0084argentina/S9119824cc8af/20194,08927.9%UnknownRecorded
FRENTE CHAQUEÑO0658argentina/S9119824cc8af/20193,95127%UnknownRecorded
FRENTE CHACO AVANZA0660argentina/S9119824cc8af/20191,1087.6%UnknownRecorded
PARTIDO CORRIENTE MARTIN FIERRO0181argentina/S9119824cc8af/20195263.6%UnknownRecorded
CIUDADANOS A GOBERNAR0179argentina/S9119824cc8af/20191911.3%UnknownRecorded
ACCION CHAQUEÑA0156argentina/S9119824cc8af/20191841.3%UnknownRecorded
NUEVO ESPACIO DE PARTICIPACION0606argentina/S9119824cc8af/20191210.8%UnknownRecorded
MOVIMIENTO POLÍTICO, SOCIAL Y CULTURAL P0083argentina/S9119824cc8af/2019880.6%UnknownRecorded
FRENTE INTEGRADOR0610argentina/S9119824cc8af/2019490.3%UnknownRecorded
MOVIMIENTO IZQUIERDA JUSTICIA Y DIGNIDAD0615argentina/S9119824cc8af/2019160.1%UnknownRecorded

2015-09-20

unknown · Legal certification not established · list votes

  • VAMOS CHACO52.5%
  • FRENTE CHACO MERECE MAS47.5%
Results for event-8f46f7acd4888c4d2b009851
Label / candidateParty codeVotesShareSeatsStatus
VAMOS CHACO0653argentina/Sab51ca8976f4/20157,57552.5%UnknownRecorded
FRENTE CHACO MERECE MAS0652argentina/Sab51ca8976f4/20156,84047.5%UnknownRecorded

4. Competition and volatility

competition index

Provisional imported-series CI

38.360–100 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=18.918731348462764, oldest_gap=5.0988553590010355, previous_gap=1.557377049180328

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Nine exact standalone party-name categories in the archived returns; accents normalized. Provincial alliances and renamed coalitions remain Other. A category records its published name, not a verified legal succession or inferred allocation of alliance votes. 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=["PARTIDO JUSTICIALISTA","UNION CIVICA RADICAL","PARTIDO SOCIALISTA","PRO - PROPUESTA REPUBLICANA","COALICION CIVICA - AFIRMACION PARA UNA REPUBLICA IGUALITARIA","GEN","PARTIDO OBRERO","PARTIDO DE LOS TRABAJADORES SOCIALISTAS","MOVIMIENTO SOCIALISTA DE LOS TRABAJADORES","Other"], interval=Latest interval, vectors=[null,null,null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Nine exact standalone party-name categories in the archived returns; accents normalized. Provincial alliances and renamed coalitions remain Other. A category records its published name, not a verified legal succession or inferred allocation of alliance votes. 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=["PARTIDO JUSTICIALISTA","UNION CIVICA RADICAL","PARTIDO SOCIALISTA","PRO - PROPUESTA REPUBLICANA","COALICION CIVICA - AFIRMACION PARA UNA REPUBLICA IGUALITARIA","GEN","PARTIDO OBRERO","PARTIDO DE LOS TRABAJADORES SOCIALISTAS","MOVIMIENTO SOCIALISTA DE LOS TRABAJADORES","Other"], interval=Previous interval, vectors=[null,null,null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Nine exact standalone party-name categories in the archived returns; accents normalized. Provincial alliances and renamed coalitions remain Other. A category records its published name, not a verified legal succession or inferred allocation of alliance votes. 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=["PARTIDO JUSTICIALISTA","UNION CIVICA RADICAL","PARTIDO SOCIALISTA","PRO - PROPUESTA REPUBLICANA","COALICION CIVICA - AFIRMACION PARA UNA REPUBLICA IGUALITARIA","GEN","PARTIDO OBRERO","PARTIDO DE LOS TRABAJADORES SOCIALISTAS","MOVIMIENTO SOCIALISTA DE LOS TRABAJADORES","Other"], interval=Both intervals mean, vectors=[null,null,null]

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

Ordinary 2027 cohort provisionally registered from the 70-municipality 2023 election archive. Fontana 2024 replacement is a separate completed event. Final current control and later exceptional calls require review. Missing older local results in several provincial datasets, full seat proclamations, intervened/replacement contests and dated coalition control. Many municipalities vote separately from provincial election day. Final 2027 calls remain subject to official publication. Ten Catamarca 2023 local returns now have primary provisional counts; final certification and older cycles are still missing. DINE 2015 download has no Catamarca local records. Entre Ríos final national consultation warns that foreign-voter tables are excluded. Neuquén final-file links returned access-denied responses; several older links point to private or defunct hosts.

  • other · open

    2019 locality result empty: {"issue": "2019 locality result empty", "name": "Distrito Tala-Sarandí", "code": "0079C"}

  • other · open

    Earlier same-election publication superseded: {"id": "AR-TU-D-OESTE", "year": 2019, "issue": "Earlier same-election publication superseded", "selected_publication": "2019-07-02", "discarded_publications": ["2019-06-15"]}

  • other · open

    Archive navigation year differs from date printed in source: {"file": "ar_formosa_2017_archivo_542.pdf", "issue": "Archive navigation year differs from date printed in source", "navigation_year": 2017, "source_date": "2019-06-16"}

Sources

Cite this record

Center for Digital Democracy. “Tres Isletas — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-CH-45-M. Sources: argentina--url-e42418ebd844931a2fab75af, argentina--url-340b1fba4bf629cdb3c7bfcb, argentina--url-50043a59606a8876e1522926, argentina--url-3406748e07b41f1b755a230e, argentina--S3b415ff3cead, argentina--S9119824cc8af, argentina--Sab51ca8976f4.