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

Office briefing

Chaco — Chamber of Deputies

Tracked current office. Identifiers stay separate from display names.

Argentina · Chaco / Chaco · regional · Chamber of DeputiesAR-CH-D

Read the complete original research briefing

Governorship uses 2023/2019/2015; legislative half-renewals use 2025/2023/2021. Same provincial electorate, distinct elected seat cohorts.

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

Geography
Chaco / Chaco
Next election
2027; formal call pending
Linked upcoming event
next-8cc987f71cf70285aac1543e
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?

2025-05-11

unknown · Legal certification not established · list votes

  • CHACO PUEDE + LA LIBERTAD AVANZA45.6%
  • FRENTE CHACO MERECE MAS33.7%
  • FRENTE PRIMERO CHACO11.4%
  • NUEVO ESPACIO CHACO INDEPENDIENTE2.1%
  • BASES PARA LA LIBERTAD1.9%
  • PARTIDO DEL OBRERO1.8%
  • AHORA VOS CHACO1.3%
  • PARTIDO LEALTAD POPULAR0.9%
  • MOVIMIENTO POLITICO, SOCIAL Y CULTURAL PROYECTO SUR0.6%
  • PARTICIPACION CIUDADANA0.5%
  • PARTIDO FRENTE ARRAIGO0.3%
Results for event-98485d07527791d928d5843f
Label / candidateParty codeVotesShareSeatsStatus
CHACO PUEDE + LA LIBERTAD AVANZA0653argentina/S5f2c3d01b639/2025235,05245.6%8Recorded
FRENTE CHACO MERECE MAS0652argentina/S5f2c3d01b639/2025173,30233.7%6Recorded
FRENTE PRIMERO CHACO0655argentina/S5f2c3d01b639/202558,71911.4%2Recorded
NUEVO ESPACIO CHACO INDEPENDIENTE0656argentina/S5f2c3d01b639/202510,5792.1%0 (recorded zero)Recorded
BASES PARA LA LIBERTAD0654argentina/S5f2c3d01b639/20259,6171.9%0 (recorded zero)Recorded
PARTIDO DEL OBRERO0071argentina/S5f2c3d01b639/20259,1691.8%0 (recorded zero)Recorded
AHORA VOS CHACO0642argentina/S5f2c3d01b639/20256,8741.3%0 (recorded zero)Recorded
PARTIDO LEALTAD POPULAR0604argentina/S5f2c3d01b639/20254,5250.9%0 (recorded zero)Recorded
MOVIMIENTO POLITICO, SOCIAL Y CULTURAL PROYECTO SUR0180argentina/S5f2c3d01b639/20252,8940.6%0 (recorded zero)Recorded
PARTICIPACION CIUDADANA0612argentina/S5f2c3d01b639/20252,6870.5%0 (recorded zero)Recorded
PARTIDO FRENTE ARRAIGO0635argentina/S5f2c3d01b639/20251,4970.3%0 (recorded zero)Recorded

2023-09-17

unknown · Legal certification not established · list votes

  • JUNTOS POR EL CAMBIO45.0%
  • FRENTE CHAQUEÑO42.4%
  • CORRIENTE DE EXPRESION RENOVADA5.2%
  • LA LIBERTAD AVANZA3.7%
  • FRENTE INTEGRADOR2.1%
  • LIBERTARIOS EN ACCION0.9%
  • PARTIDO DEL OBRERO0.7%
Results for event-b5c99052bd36a6bd6c3f1af8
Label / candidateParty codeVotesShareSeatsStatus
JUNTOS POR EL CAMBIO0653argentina/S3b415ff3cead/2023301,66045%8Recorded
FRENTE CHAQUEÑO0652argentina/S3b415ff3cead/2023284,17142.4%8Recorded
CORRIENTE DE EXPRESION RENOVADA0665argentina/S3b415ff3cead/202335,1905.2%0 (recorded zero)Recorded
LA LIBERTAD AVANZA0659argentina/S3b415ff3cead/202325,0003.7%0 (recorded zero)Recorded
FRENTE INTEGRADOR0610argentina/S3b415ff3cead/202313,8512.1%0 (recorded zero)Recorded
LIBERTARIOS EN ACCION0668argentina/S3b415ff3cead/20236,1120.9%0 (recorded zero)Recorded
PARTIDO DEL OBRERO0071argentina/S3b415ff3cead/20234,9660.7%0 (recorded zero)Recorded

2021-11-14

unknown · Legal certification not established · list votes

  • ALIANZA FRENTE DE TODOS43.3%
  • ALIANZA CHACO CAMBIA + JUNTOS POR EL CAMBIO41.9%
  • PARTIDO FRENTE INTEGRADOR7.6%
  • PARTIDO DEL OBRERO2.4%
  • ALIANZA FRENTE VAMOS CON VOS2.0%
  • PARTIDO FRENTE POR LA EDUCACION Y EL TRABAJO1.6%
  • PARTIDO ACCION CHAQUEÑA1.1%
Results for event-e580af6ec00685334597c1d2
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA FRENTE DE TODOSargentina/S6f4c51096185/2021268,86943.3%UnknownRecorded
ALIANZA CHACO CAMBIA + JUNTOS POR EL CAMBIOargentina/S6f4c51096185/2021259,97041.9%UnknownRecorded
PARTIDO FRENTE INTEGRADORargentina/S6f4c51096185/202147,4357.6%UnknownRecorded
PARTIDO DEL OBREROargentina/S6f4c51096185/202115,0442.4%UnknownRecorded
ALIANZA FRENTE VAMOS CON VOSargentina/S6f4c51096185/202112,2082%UnknownRecorded
PARTIDO FRENTE POR LA EDUCACION Y EL TRABAJOargentina/S6f4c51096185/20219,9181.6%UnknownRecorded
PARTIDO ACCION CHAQUEÑAargentina/S6f4c51096185/20216,8601.1%UnknownRecorded

Other events (not selected cycles)

  • 2015-09-20 · unknown · Legal certification not established
  • 2019-10-13 · unknown · Legal certification not established

4. Competition and volatility

competition index

Provisional imported-series CI

59.40–100 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=11.992270568928852, oldest_gap=1.434619154479094, previous_gap=2.6066025784335665

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

Governorship uses 2023/2019/2015; legislative half-renewals use 2025/2023/2021. Same provincial electorate, distinct elected seat cohorts. 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. “Chaco — Chamber of Deputies.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-CH-D. Sources: argentina--url-09c909d098817de259b564b5, argentina--url-e42418ebd844931a2fab75af, argentina--url-6191762511056a41e12db2c6, argentina--url-340b1fba4bf629cdb3c7bfcb, argentina--url-50043a59606a8876e1522926, argentina--url-3406748e07b41f1b755a230e, argentina--S5f2c3d01b639, argentina--S3b415ff3cead, argentina--S6f4c51096185, argentina--Sab51ca8976f4, argentina--S9119824cc8af.