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

Office briefing

CASTELLI — Municipal shared ballot: mayor / council

Tracked current office. Identifiers stay separate from display names.

Argentina · CASTELLI / Buenos Aires — QUINTA · municipal · Municipal shared ballot: mayor / councilAR-PBA-M-023

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
CASTELLI / Buenos Aires — QUINTA
Next election
2027
Linked upcoming event
next-f585f3da36fdf8f9bd5beadd
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 PATRIA52.5%
  • ALIANZA SOMOS BUENOS AIRES18.1%
  • ALIANZA LA LIBERTAD AVANZA17.0%
  • ALIANZA UNION LIBERAL12.5%
Results for event-b8227e38c229a4948e52293a
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA FUERZA PATRIA2200argentina/S87c6ebca74/20252,95752.5%5Recorded
ALIANZA SOMOS BUENOS AIRES2204argentina/S87c6ebca74/20251,02118.1%0 (recorded zero)Recorded
ALIANZA LA LIBERTAD AVANZA2206argentina/S87c6ebca74/202595617%0 (recorded zero)Recorded
ALIANZA UNION LIBERAL2208argentina/S87c6ebca74/202570312.5%0 (recorded zero)Recorded

2023-10-22

Ordinary · Legal certification not established · unknown

  • UNION POR LA PATRIA59.0%
  • JUNTOS POR EL CAMBIO31.1%
  • LA LIBERTAD AVANZA9.9%
Results for event-3d08fc8fcc71aafccbd8382d
Label / candidateParty codeVotesShareSeatsStatus
UNION POR LA PATRIA134argentina/S4605676e88/20233,64859%3Recorded
JUNTOS POR EL CAMBIO132argentina/S4605676e88/20231,92331.1%2Recorded
LA LIBERTAD AVANZA135argentina/S4605676e88/20236149.9%0 (recorded zero)Recorded

2021-11-14

Ordinary · Legal certification not established · unknown

  • FRENTE DE TODOS51.7%
  • ALIANZA JUNTOS45.4%
  • ALIANZA AVANZA LIBERTAD2.9%
Results for event-4d99cc6b2b36840a0e631f93
Label / candidateParty codeVotesShareSeatsStatus
FRENTE DE TODOS507argentina/S14ff964b9a/20213,17951.7%3Recorded
ALIANZA JUNTOS506argentina/S14ff964b9a/20212,79345.4%2Recorded
ALIANZA AVANZA LIBERTAD503argentina/S14ff964b9a/20211792.9%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. “CASTELLI — Municipal shared ballot: mayor / council.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-PBA-M-023. 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.