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

Office briefing

ZARATE — Municipal shared ballot: mayor / council

Tracked current office. Identifiers stay separate from display names.

Argentina · ZARATE / Buenos Aires — SEGUNDA · municipal · Municipal shared ballot: mayor / councilAR-PBA-M-125

Read the complete original research briefing

One shared municipal ballot is counted once. The council comparison uses 2025, 2023 and 2021; mayor elections are separately identifiable in the retained 2023, 2019 and 2015 returns. Council seats show the renewal cohort. Current control, special events and the 2027 call remain unverified.

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

Geography
ZARATE / Buenos Aires — SEGUNDA
Next election
2027
Linked upcoming event
next-a03769bdaef6b24610b56593
Registry qualification
Unknown

2. How certain is that date?

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

3. Who won earlier selected elections?

2025-09-07

Ordinary · Legal certification not established · unknown

  • ALIANZA FUERZA PATRIA39.8%
  • ALIANZA LA LIBERTAD AVANZA33.0%
  • ESP. ABIERTO PARA EL DES. Y LA INT. SOCIAL7.0%
  • ALIANZA UNION Y LIBERTAD5.9%
  • NUEVO ZARATE5.2%
  • ALIANZA NUEVOS AIRES3.3%
  • FTE. DE IZQUIERDA Y DE TRABAJADORES - UNIDAD2.8%
  • ALIANZA POTENCIA2.6%
  • PARTIDO LIBERTARIO0.6%
Results for event-2335658eb847f98cc9f32de1
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA FUERZA PATRIA2200argentina/S87c6ebca74/202524,40839.8%6Recorded
ALIANZA LA LIBERTAD AVANZA2206argentina/S87c6ebca74/202520,23433%4Recorded
ESP. ABIERTO PARA EL DES. Y LA INT. SOCIAL91argentina/S87c6ebca74/20254,3287.1%0 (recorded zero)Recorded
ALIANZA UNION Y LIBERTAD2207argentina/S87c6ebca74/20253,6325.9%0 (recorded zero)Recorded
NUEVO ZARATE612argentina/S87c6ebca74/20253,1755.2%0 (recorded zero)Recorded
ALIANZA NUEVOS AIRES2205argentina/S87c6ebca74/20251,9953.3%0 (recorded zero)Recorded
FTE. DE IZQUIERDA Y DE TRABAJADORES - UNIDAD2203argentina/S87c6ebca74/20251,6992.8%0 (recorded zero)Recorded
ALIANZA POTENCIA2201argentina/S87c6ebca74/20251,6032.6%0 (recorded zero)Recorded
PARTIDO LIBERTARIO1006argentina/S87c6ebca74/20253370.6%0 (recorded zero)Recorded

2023-10-22

Ordinary · Legal certification not established · unknown

  • JUNTOS POR EL CAMBIO42.4%
  • UNION POR LA PATRIA39.7%
  • LA LIBERTAD AVANZA15.9%
  • FRENTE DE IZQUIERDA Y TRABAJADORES UNIDAD2.0%
Results for event-d9a8d4855372e614d815501a
Label / candidateParty codeVotesShareSeatsStatus
JUNTOS POR EL CAMBIO132argentina/S4605676e88/202331,40042.4%4Recorded
UNION POR LA PATRIA134argentina/S4605676e88/202329,43339.7%4Recorded
LA LIBERTAD AVANZA135argentina/S4605676e88/202311,80315.9%2Recorded
FRENTE DE IZQUIERDA Y TRABAJADORES UNIDAD136argentina/S4605676e88/20231,4922%0 (recorded zero)Recorded

2021-11-14

Ordinary · Legal certification not established · unknown

  • ALIANZA JUNTOS40.6%
  • FRENTE DE TODOS34.5%
  • ALIANZA AVANZA LIBERTAD8.4%
  • FRENTE DE IZQUIERDA Y DE TRABAJADORES -6.1%
  • FRENTE VAMOS CON VOS4.7%
  • PARTIDO UNION CELESTE Y BLANCO3.6%
  • PARTIDO REPUBLICANO FEDERAL2.1%
Results for event-dfa934e4702620d0242aa7f0
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA JUNTOS506argentina/S14ff964b9a/202127,79240.6%6Recorded
FRENTE DE TODOS507argentina/S14ff964b9a/202123,61034.5%4Recorded
ALIANZA AVANZA LIBERTAD503argentina/S14ff964b9a/20215,7408.4%0 (recorded zero)Recorded
FRENTE DE IZQUIERDA Y DE TRABAJADORES -504argentina/S14ff964b9a/20214,1446.1%0 (recorded zero)Recorded
FRENTE VAMOS CON VOS508argentina/S14ff964b9a/20213,2194.7%0 (recorded zero)Recorded
PARTIDO UNION CELESTE Y BLANCO27argentina/S14ff964b9a/20212,4953.7%0 (recorded zero)Recorded
PARTIDO REPUBLICANO FEDERAL314argentina/S14ff964b9a/20211,4232.1%0 (recorded zero)Recorded

Other events (not selected cycles)

  • 2015-10-25 · Ordinary · Legal certification not established
  • 2019-10-27 · Ordinary · Legal certification not established

4. Competition and volatility

competition index

Withheld

Unknown0–100 historical closeness

Actual-event and/or comparability review incomplete

Comparison status: Comparison unavailable · One shared municipal ballot is counted once. The council comparison uses 2025, 2023 and 2021; mayor elections are separately identifiable in the retained 2023, 2019 and 2015 returns. Council seats show the renewal cohort. Current control, special events and the 2027 call remain unverified.

Method ci.weighted-gap.v1. Inputs: latest_gap=null, oldest_gap=null, previous_gap=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: 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

One shared municipal ballot is counted once. The council comparison uses 2025, 2023 and 2021; mayor elections are separately identifiable in the retained 2023, 2019 and 2015 returns. Council seats show the renewal cohort. Current control, special events and the 2027 call remain unverified. 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. “ZARATE — Municipal shared ballot: mayor / council.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-PBA-M-125. Sources: argentina--url-42b4c83cbd75c039886e3ca3, argentina--url-1c1f446d53945974d5d8a6a7, argentina--url-5c0c4f6d4dd79dfd8d192697, argentina--url-b833183bb93ac412fb4220a4, argentina--url-1e87b5cd1c663e9bcd454fb0, argentina--S87c6ebca74, argentina--S4605676e88, argentina--S14ff964b9a, argentina--S3470374b4e, argentina--S7e7440bf65.