Skip to observatory content

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

Office briefing

ARROYO SECO — Municipal council / communal commission

Tracked current office. Identifiers stay separate from display names.

Argentina · ARROYO SECO / Santa Fe — ROSARIO · municipal · Municipal council / communal commissionAR-SF-C-ROSARIO-ARROYOSECO

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. 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
ARROYO SECO / Santa Fe — ROSARIO
Next election
2027; formal call pending
Linked upcoming event
next-a36ab19c9947c83a864badcc
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

  • MÁS PARA SANTA FE36.1%
  • FRENTE DE LA ESPERANZA22.1%
  • UNIDOS PARA CAMBIAR SANTA FE19.9%
  • LEALTAD Y DIGNIDAD10.2%
  • LA LIBERTAD AVANZA9.4%
  • SOMOS VIDA Y LIBERTAD2.3%
Results for event-b82c0517050498e7aa1b6454
Label / candidateParty codeVotesShareSeatsStatus
MÁS PARA SANTA FE8argentina/Sa9a75bad2b02/20253,71336.1%1Recorded
FRENTE DE LA ESPERANZA3argentina/Sa9a75bad2b02/20252,27622.1%1Recorded
UNIDOS PARA CAMBIAR SANTA FE78argentina/Sa9a75bad2b02/20252,05019.9%1Recorded
LEALTAD Y DIGNIDAD61argentina/Sa9a75bad2b02/20251,04610.2%0 (recorded zero)Recorded
LA LIBERTAD AVANZA69argentina/Sa9a75bad2b02/20259699.4%0 (recorded zero)Recorded
SOMOS VIDA Y LIBERTAD21argentina/Sa9a75bad2b02/20252412.3%0 (recorded zero)Recorded

2023-09-10

Ordinary · Legal certification not established · list votes

  • UNIDAD PARA LA VICTORIA ARROYO SECO28.8%
  • UNIDOS PARA CAMBIAR SANTA FE28.6%
  • JUNTOS AVANCEMOS27.6%
  • VIVA LA LIBERTAD9.0%
  • UNITE POR LA LIBERTAD Y LA DIGNIDAD6.0%
Results for event-2c7e27aed5186c124407163e
Label / candidateParty codeVotesShareSeatsStatus
UNIDAD PARA LA VICTORIA ARROYO SECO66argentina/Sd5731ccd0603/20233,76228.8%1Recorded
UNIDOS PARA CAMBIAR SANTA FE102argentina/Sd5731ccd0603/20233,73428.6%1Recorded
JUNTOS AVANCEMOS83argentina/Sd5731ccd0603/20233,60827.6%1Recorded
VIVA LA LIBERTAD38argentina/Sd5731ccd0603/20231,1759%0 (recorded zero)Recorded
UNITE POR LA LIBERTAD Y LA DIGNIDAD65argentina/Sd5731ccd0603/20237806%0 (recorded zero)Recorded

2021-11-14

Ordinary · Legal certification not established · list votes

  • FRENTE DE TODOS27.1%
  • JUNTOS POR EL CAMBIO17.6%
  • FRENTE PROGRESISTA CÍVICO Y SOCIAL16.3%
  • IGUALDAD Y PARTICIPACION13.1%
  • FRENTE PARA EL CAMBIO11.8%
  • SOBERANIA POPULAR7.6%
  • PARTIDO DEMOCRATA PROGRESISTA6.4%
Results for event-0eead0acf1860080b6c72f0d
Label / candidateParty codeVotesShareSeatsStatus
FRENTE DE TODOS31argentina/S7909d0dce753/20213,46627.1%1Recorded
JUNTOS POR EL CAMBIO105argentina/S7909d0dce753/20212,25317.6%1Recorded
FRENTE PROGRESISTA CÍVICO Y SOCIAL18argentina/S7909d0dce753/20212,08216.3%1Recorded
IGUALDAD Y PARTICIPACION126argentina/S7909d0dce753/20211,68213.1%0 (recorded zero)Recorded
FRENTE PARA EL CAMBIO104argentina/S7909d0dce753/20211,51111.8%0 (recorded zero)Recorded
SOBERANIA POPULAR73argentina/S7909d0dce753/20219727.6%0 (recorded zero)Recorded
PARTIDO DEMOCRATA PROGRESISTA63argentina/S7909d0dce753/20218256.4%0 (recorded zero)Recorded

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

Provisional imported-series CI

53.060–100 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=13.958232151529867, oldest_gap=9.483230396372448, previous_gap=0.21441151696148353

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?
POLINESI JULIAN ANDRESSource roster entry2015Unknownunknown
SANCHEZ CARLOS FRANCISCOSource roster entry2015Unknownunknown
ATTORESI MATIAS NORBERTOSource roster entry2015Unknownunknown
GHIONE SEBASTIAN ALBERTO SANTIAGSource roster entry2021Unknownunknown
CORADINI MIGUEL ANGELSource roster entry2021Unknownunknown
TONELLI DANIEL ROBERTOSource roster entry2021Unknownunknown
CORADINI MIGUEL ANGELCONCEJAL2017CAMBIEMOSunknown
TONELLI DANIEL ROBERTOCONCEJAL2017FRENTE PROGRESISTA CIVICO Y SOCIALunknown
CROSIO LUCIANO ANDRESCONCEJAL2017FRENTE JUSTICIALISTAunknown
ARTUSA JOSEFINACONCEJAL2019JUNTOSunknown
ATTORESI MATIAS NORBERTOCONCEJAL2019CAMBIEMOSunknown
CUELLO JORGE ALBERTOCONCEJAL2019FRENTE PROGRESISTA CIVICO Y SOCIALunknown
SALINAS DAMIAN GABRIELConcejal/a2023UNIDAD PARA LA VICTORIA ARROYO SECOunknown
ATTORESI MATIAS NORBERTOConcejal/a2023UNIDOS PARA CAMBIAR SANTA FEunknown
MURINA JOSE LUISConcejal/a2023JUNTOS AVANCEMOSunknown
POLINESI JULIAN ANDRESConcejal/a2025MÁS PARA SANTA FEunknown
SERRA MILAGROSConcejal/a2025FRENTE DE LA ESPERANZAunknown
DELORENZI GUSTAVO JAVIERConcejal/a2025UNIDOS PARA CAMBIAR SANTA FEunknown

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. 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. “ARROYO SECO — Municipal council / communal commission.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-SF-C-ROSARIO-ARROYOSECO. 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--Sc8f92a3c1d94, argentina--Sa3b7b35e32ee, argentina--S492e928e5e7e, argentina--S425b76ef9089, argentina--Sf3a1f8fa36ef.