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

Survey evidence

Polling

National context and local polls, with fieldwork dates, question type, pollster, sample, and methodology. Approval categories are not candidates. Local government-change risk is unassessed unless a calibrated model is supplied.

national · vote intention

Datafolha

Hypothetical presidential runoff

Reported margin of error: ±2 percentage points.

Population: National presidential poll; context for subnational races. Fieldwork 2026-09-01–2026-09-02 · published 2026-09-03. Sample 2,002.

National context — not a local forecast and not attached to a municipal office.

Responses for poll-759b34cd8ce8a4149432a438
ResponseValue
Lula (PT)46%
Flávio Bolsonaro (PL)44%

No national-to-local transfer model calibrated; local government risk unassessed

Competitive national contest within the reported margin of error. This does not establish which state or municipal incumbents will lose.

national · presidential approval

AtlasIntel / Bloomberg

Presidential job approval

Named officeholder in this observation: Lula

Reported margin of error: ±1 percentage points.

Population: National presidential approval; context for subnational races. Fieldwork 2026-07-22–2026-07-27. Sample 5,021.

Atlas RDR, digitally recruited and post-stratified national adult sample; reported 95% confidence margin

National context — not a local forecast and not attached to a municipal office.

Responses for poll-65c0265e44d4642b94d20941
ResponseValue
Approve48%
Disapprove51%
Unsure1%

Context indicator only; no uniform national-to-local swing or win probability

Earlier comparison wave; named officeholder and question wording retained.

national · presidential approval

AtlasIntel / Bloomberg

Presidential job approval

Named officeholder in this observation: Lula

Reported margin of error: ±1 percentage points.

Population: National presidential approval; context for subnational races. Fieldwork 2026-08-25–2026-08-30. Sample 5,014.

Atlas RDR, digitally recruited and post-stratified national adult sample; reported 95% confidence margin

National context — not a local forecast and not attached to a municipal office.

Responses for poll-30eb96282fdf997ea70a8116
ResponseValue
Approve45%
Disapprove53%
Unsure2%

Context indicator only; no uniform national-to-local swing or win probability

Rounded approval fell from 48% to 45%, and disapproval rose from 51% to 53%. This supplies a national headwind indicator for Lula-aligned candidates, but Brazilian state coalitions differ and individual state polling takes precedence. Overview values are rounded to whole percentage points.