Office briefing
ARROYO SECO — Mayor
Tracked current office. Identifiers stay separate from display names.
Argentina · ARROYO SECO / Santa Fe — ROSARIO · municipal · MayorAR-SF-M-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-34e8e7227c8e54270c80b191
- 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?
2023-09-10
Ordinary · Legal certification not established · list votes
- UNIDOS PARA CAMBIAR SANTA FE32.0%
- UNIDAD PARA LA VICTORIA ARROYO SECO31.3%
- JUNTOS AVANCEMOS29.5%
- UNITE POR LA LIBERTAD Y LA DIGNIDAD7.2%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| UNIDOS PARA CAMBIAR SANTA FE · TONELLI DANIEL ROBERTO | 102argentina/Sd5731ccd0603/2023 | 4,266 | 32% | 1 | Recorded |
| UNIDAD PARA LA VICTORIA ARROYO SECO | 66argentina/Sd5731ccd0603/2023 | 4,179 | 31.3% | 0 (recorded zero) | Recorded |
| JUNTOS AVANCEMOS | 83argentina/Sd5731ccd0603/2023 | 3,943 | 29.5% | 0 (recorded zero) | Recorded |
| UNITE POR LA LIBERTAD Y LA DIGNIDAD | 65argentina/Sd5731ccd0603/2023 | 957 | 7.2% | 0 (recorded zero) | Recorded |
2019-06-16
Ordinary · Legal certification not established · list votes
- JUNTOS40.5%
- FRENTE PROGRESISTA, CIVICO Y SOCIAL32.4%
- CAMBIEMOS22.3%
- ARROYO SECO SOMOS TODOS4.8%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| JUNTOS · ESPER NIZAR | 40argentina/Sf3a1f8fa36ef/2019 | 5,102 | 40.5% | 1 | Recorded |
| FRENTE PROGRESISTA, CIVICO Y SOCIAL | 16argentina/Sf3a1f8fa36ef/2019 | 4,086 | 32.4% | 0 (recorded zero) | Recorded |
| CAMBIEMOS | 44argentina/Sf3a1f8fa36ef/2019 | 2,808 | 22.3% | 0 (recorded zero) | Recorded |
| ARROYO SECO SOMOS TODOS | 87argentina/Sf3a1f8fa36ef/2019 | 605 | 4.8% | 0 (recorded zero) | Recorded |
2015-06-14
Ordinary · Legal certification not established · list votes
- FRENTE JUSTICIALISTA PARA LA VICTORIA49.4%
- FRENTE PROGRESISTA CIVICO Y SOCIAL35.4%
- UNION PRO FEDERAL15.2%
| Label / candidate | Party code | Votes | Share | Seats | Status |
|---|---|---|---|---|---|
| FRENTE JUSTICIALISTA PARA LA VICTORIA | 4argentina/S1d81268d0ad9/2015 | 6,576 | 49.4% | 1 | Recorded |
| FRENTE PROGRESISTA CIVICO Y SOCIAL | 6argentina/S1d81268d0ad9/2015 | 4,708 | 35.4% | 0 (recorded zero) | Recorded |
| UNION PRO FEDERAL | 5argentina/S1d81268d0ad9/2015 | 2,022 | 15.2% | 0 (recorded zero) | Recorded |
4. Competition and volatility
competition index
Provisional imported-series CI78.930–100 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=0.6519295616335725, oldest_gap=14.038779497970836, previous_gap=8.062852154590907
pedersen volatility
Withheld volatilityUnknownpercentage 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 volatilityUnknownpercentage 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 volatilityUnknownpercentage 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.
| Person | Role | As of | Affiliation | Principal? |
|---|---|---|---|---|
| ESPER NIZAR | INTENDENTE | 2019 | JUNTOS | unknown |
| TONELLI DANIEL ROBERTO | Intendente/a | 2023 | UNIDOS PARA CAMBIAR SANTA FE | unknown |
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
- Argentina: https://www.santafe.gov.ar/tribunalelectoral/wp-content/uploads/sites/84/2024/08/resultadosGenerales2023.ods · rights unknown
- Argentina: https://www.santafe.gov.ar/tribunalelectoral/wp-content/uploads/sites/84/2019/08/regr2019.xlsx · rights unknown
- Argentina: https://www.santafe.gov.ar/tribunalelectoral/wp-content/uploads/sites/84/2023/04/resultados_intendente2015.pdf · rights unknown
- Argentina: https://www.santafe.gob.ar/ms/tribunalelectoral/wp-content/uploads/sites/84/2026/06/Texto-Original-Ley-N%C2%B0-14436.pdf · rights unknown
- Argentina: Santa Fe Tribunal Electoral: ar_sf_2023_results.ods · rights unknown
- Argentina: Santa Fe Tribunal Electoral: ar_sf_2023_elected.ods · rights unknown
- Argentina: Santa Fe Tribunal Electoral: ar_sf_2019_results.xlsx · rights unknown
- Argentina: Santa Fe Tribunal Electoral: ar_sf_2019_elected.xlsx · rights unknown
- Argentina: Santa Fe Tribunal Electoral: ar_sf_2015_doc4.pdf · rights unknown
Cite this record
Center for Digital Democracy. “ARROYO SECO — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/AR-SF-M-ROSARIO-ARROYOSECO. Sources: argentina--url-c59a56523176464d6aa95c66, argentina--url-5f87e101c11beb3c13ee782c, argentina--url-004f9429bd83adc5264c7867, argentina--url-d7161d241341725861e1307d, argentina--Sd5731ccd0603, argentina--S6c0f4226a3e8, argentina--Sf3a1f8fa36ef, argentina--S492e928e5e7e, argentina--S1d81268d0ad9.