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

Office briefing

NECOCHEA — Municipal shared ballot: mayor / council

Tracked current office. Identifiers stay separate from display names.

Argentina · NECOCHEA / Buenos Aires — QUINTA · municipal · Municipal shared ballot: mayor / councilAR-PBA-M-082

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
NECOCHEA / Buenos Aires — QUINTA
Next election
2027
Linked upcoming event
next-37b7c9eeff7967f87e39aa8d
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 LA LIBERTAD AVANZA31.8%
  • ALIANZA FUERZA PATRIA20.4%
  • NUEVA NECOCHEA (A.V.N.N.)17.8%
  • AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)14.2%
  • ALIANZA SOMOS BUENOS AIRES5.4%
  • ALIANZA UNION Y LIBERTAD3.2%
  • ALIANZA POTENCIA3.1%
  • FTE. DE IZQUIERDA Y DE TRABAJADORES - UNIDAD2.6%
  • VALORES REPUBLICANOS1.0%
  • PARTIDO FRENTE PATRIOTA FEDERAL0.5%
  • PARTIDO LIBERTARIO0.0%
Results for event-e47abb441f9e0697d1138ba7
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA LA LIBERTAD AVANZA2206argentina/S87c6ebca74/202515,04331.8%4Recorded
ALIANZA FUERZA PATRIA2200argentina/S87c6ebca74/20259,66320.4%2Recorded
NUEVA NECOCHEA (A.V.N.N.)895argentina/S87c6ebca74/20258,41617.8%2Recorded
AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)869argentina/S87c6ebca74/20256,70414.2%2Recorded
ALIANZA SOMOS BUENOS AIRES2204argentina/S87c6ebca74/20252,5505.4%0 (recorded zero)Recorded
ALIANZA UNION Y LIBERTAD2207argentina/S87c6ebca74/20251,5113.2%0 (recorded zero)Recorded
ALIANZA POTENCIA2201argentina/S87c6ebca74/20251,4693.1%0 (recorded zero)Recorded
FTE. DE IZQUIERDA Y DE TRABAJADORES - UNIDAD2203argentina/S87c6ebca74/20251,2152.6%0 (recorded zero)Recorded
VALORES REPUBLICANOS1008argentina/S87c6ebca74/20254741%0 (recorded zero)Recorded
PARTIDO FRENTE PATRIOTA FEDERAL963argentina/S87c6ebca74/20252420.5%0 (recorded zero)Recorded
PARTIDO LIBERTARIO1006argentina/S87c6ebca74/202550%0 (recorded zero)Recorded

2023-10-22

Ordinary · Legal certification not established · unknown

  • NUEVA NECOCHEA (A.V.N.N.)49.8%
  • LA LIBERTAD AVANZA14.8%
  • UNION POR LA PATRIA13.2%
  • JUNTOS POR EL CAMBIO12.4%
  • AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)9.8%
Results for event-6122a773dec4df128994f01f
Label / candidateParty codeVotesShareSeatsStatus
NUEVA NECOCHEA (A.V.N.N.)895argentina/S4605676e88/202329,14549.8%5Recorded
LA LIBERTAD AVANZA135argentina/S4605676e88/20238,68114.8%2Recorded
UNION POR LA PATRIA134argentina/S4605676e88/20237,72413.2%2Recorded
JUNTOS POR EL CAMBIO132argentina/S4605676e88/20237,25812.4%1Recorded
AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)869argentina/S4605676e88/20235,7669.8%0 (recorded zero)Recorded

2021-11-14

Ordinary · Legal certification not established · unknown

  • NUEVA NECOCHEA (A.V.N.N.)30.0%
  • ALIANZA JUNTOS25.2%
  • FRENTE DE TODOS17.9%
  • AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)15.8%
  • ALIANZA AVANZA LIBERTAD4.0%
  • FRENTE DE IZQUIERDA Y DE TRABAJADORES -2.9%
  • FRENTE VAMOS CON VOS2.9%
  • PARTIDO FEDERAL1.3%
Results for event-5c6b8263675016f0dbc8d3d6
Label / candidateParty codeVotesShareSeatsStatus
NUEVA NECOCHEA (A.V.N.N.)895argentina/S14ff964b9a/202116,82830%3Recorded
ALIANZA JUNTOS506argentina/S14ff964b9a/202114,13325.2%3Recorded
FRENTE DE TODOS507argentina/S14ff964b9a/202110,01117.9%2Recorded
AGRUPACION COMUNAL TRANSFORMADORA (A.C.T.)869argentina/S14ff964b9a/20218,86815.8%2Recorded
ALIANZA AVANZA LIBERTAD503argentina/S14ff964b9a/20212,2534%0 (recorded zero)Recorded
FRENTE DE IZQUIERDA Y DE TRABAJADORES -504argentina/S14ff964b9a/20211,6492.9%0 (recorded zero)Recorded
FRENTE VAMOS CON VOS508argentina/S14ff964b9a/20211,6192.9%0 (recorded zero)Recorded
PARTIDO FEDERAL8argentina/S14ff964b9a/20216991.3%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. “NECOCHEA — Municipal shared ballot: mayor / council.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-PBA-M-082. 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.