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

Office briefing

YBY YA'U / CONCEPCION — Mayor

Tracked current office. Identifiers stay separate from display names.

Paraguay · YBY YA'U / CONCEPCION / CONCEPCION · municipal · MayorPY-01-009-M

Read the complete original research briefing

Municipality matched by department and name, with documented abbreviation/rename bridges. Historical numeric district codes are not stable. This is an identity bridge, not proof of unchanged boundaries. Replacement archive runs through November 2025; later events/current control require verification.

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

Geography
YBY YA'U / CONCEPCION / CONCEPCION
Next election
2026-10-04
Linked upcoming event
next-4b423b74c23d6e2ca5434791
Registry qualification
Unknown

2. How certain is that date?

2026-10-04 is expected (not formally called). Day precision. A date without a formal call is not confirmed.

3. Who won earlier selected elections?

2021-10-10

Ordinary · Legal certification not established · valid votes

  • ALIANZA TODOS POR YBY YAU56.5%
  • PARTIDO COLORADO43.5%
Results for event-1bf85d09ea14f7a455d8066b
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA TODOS POR YBY YAU · VIDAL ARGUELLO BAZANATYYparaguay/S82789e1ede/20214,98756.5%1Recorded
PARTIDO COLORADO · RUTILIO CANALE ACHARANRparaguay/S82789e1ede/20213,83443.5%0 (recorded zero)Recorded

2015-11-15

Ordinary · Legal certification not established · valid votes

  • ALIANZA TODOS POR YBY YAU65.7%
  • PARTIDO COLORADO34.3%
Results for event-c9496cf8aa317cacb6c43382
Label / candidateParty codeVotesShareSeatsStatus
ALIANZA TODOS POR YBY YAU · VIDAL ARGUELLO BAZANATYYparaguay/S82789e1ede/20154,60365.7%1Recorded
PARTIDO COLORADO · ELVIO LOPEZ TORALESANRparaguay/S82789e1ede/20152,40834.3%0 (recorded zero)Recorded

2013-09-09

Repeated / replacement · Legal certification not established · valid votes

  • Partido Coloradounknown
Results for event-28bdcb5050fc9ccb081cd24a
Label / candidateParty codeVotesShareSeatsStatus
Partido Colorado · ELVIO LOPEZ TORALESANRparaguay/S82789e1ede/2013UnknownUnknown1Recorded

Other events (not selected cycles)

  • 1996-11-17 · Ordinary · Legal certification not established
  • 2001-11-18 · Ordinary · Legal certification not established
  • 2006-11-19 · Ordinary · Legal certification not established
  • 2010-11-07 · 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 · Municipality matched by department and name, with documented abbreviation/rename bridges. Historical numeric district codes are not stable. This is an identity bridge, not proof of unchanged boundaries. Replacement archive runs through November 2025; later events/current control require verification.

Method ci.weighted-gap.v1. Inputs: latest_gap=13.071080376374567, oldest_gap=null, previous_gap=31.30794465839395

pedersen volatility

Provisional volatility

9.12percentage points

Grouped Pedersen lower bound (percentage points). Standalone ANR, PLRA, PEN, PPQ, UNACE and Frente Guasu; all other lists and mixed alliances in Other. No coalition vote is split among constituent parties. 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

Method pedersen.grouped.v1. Inputs: groups=["ANR","PLRA","PEN","PPQ","UNACE","Frente Guasu","Other"], interval=Latest interval, vectors=[[43.464459811812716,0,0,0,0,0,56.535540188187284],[34.346027670803025,0,0,0,0,0,65.65397232919698],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Standalone ANR, PLRA, PEN, PPQ, UNACE and Frente Guasu; all other lists and mixed alliances in Other. No coalition vote is split among constituent parties. 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=["ANR","PLRA","PEN","PPQ","UNACE","Frente Guasu","Other"], interval=Previous interval, vectors=[[43.464459811812716,0,0,0,0,0,56.535540188187284],[34.346027670803025,0,0,0,0,0,65.65397232919698],null]

pedersen volatility

Withheld volatility

Unknownpercentage points

Grouped Pedersen lower bound (percentage points). Standalone ANR, PLRA, PEN, PPQ, UNACE and Frente Guasu; all other lists and mixed alliances in Other. No coalition vote is split among constituent parties. 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=["ANR","PLRA","PEN","PPQ","UNACE","Frente Guasu","Other"], interval=Both intervals mean, vectors=[[43.464459811812716,0,0,0,0,0,56.535540188187284],[34.346027670803025,0,0,0,0,0,65.65397232919698],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.

7. Unresolved issues and sources

Municipality matched by department and name, with documented abbreviation/rename bridges. Historical numeric district codes are not stable. This is an identity bridge, not proof of unchanged boundaries. Replacement archive runs through November 2025; later events/current control require verification. Replacement elections sometimes contain only winner/seat evidence. New municipalities, boundary/party continuity and dated control remain incomplete. The separate ordinary-election baseline helps historical comparison but does not fill replacement losing-vote gaps.

    Sources

    Cite this record

    Center for Digital Democracy. “YBY YA'U / CONCEPCION — Mayor.” Subnational Election Observatory, releaselatin-america-fe5e91689def, snapshot 2026-09-13. /electiondatabase/offices/PY-01-009-M. Sources: paraguay--url-7428974d1a7032fc28d114b3, paraguay--S82789e1ede, paraguay--Sebfa7a567d.