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

Office briefing

ZAVALLA — Municipal mayor/commission joint ballot (2027 transition)

Tracked current office. Identifiers stay separate from display names.

Argentina · ZAVALLA / Santa Fe — ROSARIO · municipal · Municipal mayor/commission joint ballot (2027 transition)AR-SF-C-ROSARIO-ZAVALLA

Read the complete original research briefing

Formal 2027 polling date is pending. Law 14,436 governs the 2027 transition. Local choices about council structure can remain open until 30 November 2026. Earlier communal commission returns are predecessor-institution comparisons; the new mayor/commission joint ballot is not an identical office. Official votes and elected rosters are retained. Council counts describe elected cohorts. Current governing membership and later replacements require verification.

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

Geography
ZAVALLA / Santa Fe — ROSARIO
Next election
2027; formal call pending
Linked upcoming event
next-3a143734161ce1491c4dd4a8
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?

2025-06-29

Ordinary · Legal certification not established · list votes

  • UNIDOS PARA CAMBIAR SANTA FE50.8%
  • SANTA FE PARA TODOS43.8%
  • LA LIBERTAD AVANZA5.4%
Results for event-4902af90dbb1dc637d0b682d
Label / candidateParty codeVotesShareSeatsStatus
UNIDOS PARA CAMBIAR SANTA FE78argentina/Sa9a75bad2b02/20252,09250.8%4Recorded
SANTA FE PARA TODOS32argentina/Sa9a75bad2b02/20251,80643.8%1Recorded
LA LIBERTAD AVANZA69argentina/Sa9a75bad2b02/20252235.4%0 (recorded zero)Recorded

2023-09-10

Ordinary · Legal certification not established · list votes

  • JUNTOS AVANCEMOS53.5%
  • UNIDOS PARA CAMBIAR SANTA FE46.5%
Results for event-55a63aca39156368577764b6
Label / candidateParty codeVotesShareSeatsStatus
JUNTOS AVANCEMOS83argentina/Sd5731ccd0603/20232,18453.5%4Recorded
UNIDOS PARA CAMBIAR SANTA FE102argentina/Sd5731ccd0603/20231,90246.5%1Recorded

2021-11-14

Ordinary · Legal certification not established · list votes

  • FRENTE DE TODOS66.1%
  • JUNTOS POR EL CAMBIO33.9%
Results for event-d3efb2a5f230de40bb4a4d71
Label / candidateParty codeVotesShareSeatsStatus
FRENTE DE TODOS31argentina/S7909d0dce753/20212,44166.1%UnknownRecorded
JUNTOS POR EL CAMBIO105argentina/S7909d0dce753/20211,25333.9%UnknownRecorded

Other events (not selected cycles)

  • 2017-10-22 · Ordinary · Legal certification not established
  • 2019-06-16 · Ordinary · Legal certification not established
  • 2015-06-14 · 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 · Formal 2027 polling date is pending. Law 14,436 governs the 2027 transition. Local choices about council structure can remain open until 30 November 2026. Earlier communal commission returns are predecessor-institution comparisons; the new mayor/commission joint ballot is not an identical office. Official votes and elected rosters are retained. Council counts describe elected cohorts. Current governing membership and later replacements require verification.

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.

Officeholder observations
PersonRoleAs ofAffiliationPrincipal?
RAJMIL GUILLERMO ADRIANMIEMBRO COMUNAL2017FRENTE JUSTICIALISTAunknown
GABRIELLE HUMBERTO DOMINGOMIEMBRO COMUNAL2017FRENTE JUSTICIALISTAunknown
BRACCIALARGHE LUCRECIA ZULMAMIEMBRO COMUNAL2017FRENTE JUSTICIALISTAunknown
PAPERA JUAN CARLOSMIEMBRO COMUNAL2017FRENTE JUSTICIALISTAunknown
MUJICA JOSE IGNACIOMIEMBRO COMUNAL2017FRENTE PARA EL CAMBIOunknown
RAJMIL GUILLERMO ADRIANMIEMBRO COMUNAL2019JUNTOSunknown
MARINELLI EZEQUIEL IVANMIEMBRO COMUNAL2019JUNTOSunknown
BRACCIALARGHE LUCRECIA ZULMAMIEMBRO COMUNAL2019JUNTOSunknown
PAPERA JUAN CARLOSMIEMBRO COMUNAL2019JUNTOSunknown
GARNERO NORBERTO CLAUDIOMIEMBRO COMUNAL2019CAMBIEMOSunknown
RAJMIL GUILLERMO ADRIANM. Comunal2023JUNTOS AVANCEMOSunknown
BRACCIALARGHE LUCRECIA ZULMAM. Comunal2023JUNTOS AVANCEMOSunknown
ROSSETTI RENZO FEDERICOM. Comunal2023JUNTOS AVANCEMOSunknown
RINALDI DANA TRINIDADM. Comunal2023JUNTOS AVANCEMOSunknown
SUAREZ MATIAS DAMIANM. Comunal2023UNIDOS PARA CAMBIAR SANTA FEunknown
SUAREZ MATIAS DAMIANM. Comunal2025UNIDOS PARA CAMBIAR SANTA FEunknown
ANISSETTI GABRIELA MARISAM. Comunal2025UNIDOS PARA CAMBIAR SANTA FEunknown
BARAVALLE JUAN MANUELM. Comunal2025UNIDOS PARA CAMBIAR SANTA FEunknown
ZAPATA MILENA SOLEDADM. Comunal2025UNIDOS PARA CAMBIAR SANTA FEunknown
RAJMIL GUILLERMO ADRIANM. Comunal2025SANTA FE PARA TODOSunknown

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

Formal 2027 polling date is pending. Law 14,436 governs the 2027 transition. Local choices about council structure can remain open until 30 November 2026. Earlier communal commission returns are predecessor-institution comparisons; the new mayor/commission joint ballot is not an identical office. Official votes and elected rosters are retained. Council counts describe elected cohorts. Current governing membership and later replacements require verification. 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. “ZAVALLA — Municipal mayor/commission joint ballot (2027 transition).” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-SF-C-ROSARIO-ZAVALLA. Sources: argentina--url-37c2f32beac05e8dc61453fe, argentina--url-c59a56523176464d6aa95c66, argentina--url-8d8b8d7b85a369b56478b16e, argentina--url-5f87e101c11beb3c13ee782c, argentina--url-5a55b3b32d7b3d501f49fde7, argentina--url-91c03bf4ec5aac38abbd607c, argentina--url-d7161d241341725861e1307d, argentina--Sa9a75bad2b02, argentina--S6cbb0ff8bc14, argentina--Sd5731ccd0603, argentina--S6c0f4226a3e8, argentina--S7909d0dce753, argentina--Sa3b7b35e32ee, argentina--S492e928e5e7e, argentina--S425b76ef9089, argentina--Sf3a1f8fa36ef, argentina--Sc8f92a3c1d94.