May 21, 2026

---

1. Prediction market

In the presidential market on Polymarket, Lula remained at 45.50% (stable for more than 60 hours since AtlasIntel release on May 19) while Flávio Bolsonaro fell to 23.35% (↓4.80pp in 32h vs 28.15% at close on May 19), reaching the absolute minimum of the cycle. The Lula × Flávio gap reached +22.15pp — variation of ↑4.80pp in 32 hours and the highest value recorded since market opening. Accumulated volume of the presidential market: USD 78.85M, with Tarcísio at USD 11.49M (historical anomaly of much for-and-against betting), Michelle USD 6.39M, Flávio USD 5.79M, Lula USD 5.63M, Renan USD 5.46M.

The third way reorganized asymmetrically. Renan Santos surged to 15.60% (↑3.05pp in 32h) and consolidated the SECOND position in presidential Poly, above Zema (5.55%, ↓0.70pp) and Haddad (4.70%, ↑2.35pp doubled). In the 3rd place market, Renan remained at the top with 34.50% (↓1.00pp), Zema fell to 26.00% (↓2.50pp), and Caiado recovered to 16.50% (↑3.00pp). Remarkable movement: Flávio doubled to 8.55% in the 3rd place market (↑3.75pp in 32h, vs 4.80% on May 19) — the market prices Flávio as a candidate for third place if he drops from the first place race.

In the 2nd place market, Flávio ceded for the first time the PL base: 56.00% (↓6.50pp in 32h vs 62.50% stable previously). Lula fell to 12.50% (↓2.00pp). Renan rose to 11.40% (↑1.90pp), Haddad to 5.05% (↑0.80pp), and Michelle surged to 3.25% (↑1.70pp in 32h) — first material traction of the substitution narrative in the market.

The contract for impeachment of STF justice before 2027 registered 7.25% (↑1.20pp in 32h vs 6.05% on May 19), modest sustained upward correction from the cycle minimum of 5.30% on May 18. In the Senate, the PL ceded for the first time in the cycle: 76.00% (↓2.50pp vs 78.50% stable previously). PSD recovered to 6.40% (↑1.45pp), Podemos to 3.00% (↑1.20pp), while Republicanos collapsed to 2.50% (↓1.70pp in 32h, ↓8.50pp vs the peak of 11.00% on May 17).

In the 2026 inflation bands, the high tail (≥6.50%) stabilized at 8.55% (↓0.45pp vs 9.00% on May 19), stopping the decline of ↓5.05pp from the previous day. Central band 5.00-5.49% rose to 28.55% (↑0.55pp); band 5.50-5.99% ceded to 15.45% (↓0.95pp). Technical reading: the inflation market consolidated around the central hypothesis without regaining weight in the extreme fiscal tail.

2. What the polling institutes registered

Vox Brasil released a national poll on May 20 with Lula 46.8% and Flávio Bolsonaro 38.1% in the runoff (gap +8.7pp). Rejection of Lula was 52.8% and of Flávio was 49.2%. Parallel coverage of the same survey in Exame, Folha de Alphaville, and Revista Fórum confirmed the same numbers.

Vox Brasil is the second national poll to register Flávio deterioration post-Vorcaro audio, after AtlasIntel on May 19 (1º turno Lula 47% × Flávio 34.3% gap +12.7pp; 2º turno 48.9% × 41.8% gap +7.1pp). Taken together, the two institutes show consistent gap around +7-9pp Lula in the runoff — significant methodological convergence, given that AtlasIntel and Vox use distinct sampling designs. The Datafolha of May 16 remains the most conservative reference point (1º turno 38×35 gap +3pp; 2º turno 45×45 tie), and the 5.7pp discrepancy between Vox 1º turno and Datafolha 1º turno remains the largest divergence between institutes in the cycle.

State-level polls also published: Real Time Big Data in Ceará shows Lula with substantial advantage in first and second rounds. The next expected national release is Datafolha on May 22, n=2,004, including scenario with Michelle Bolsonaro as substitute on the PL slate.

📅 Survey calendar — next 7 days

Surveys registered with the TSE with publication scheduled between May 22 and May 28. Inclusion in the table does not mean publication is confirmed — institutes may delay or cancel release. Filter applied: sample ≥ 1,000. Each protocol linked to TSE public query.

Source: TSE public registry via disclosure portal and AFOS Analytics API. Status "registered ≠ published" — confirmation of effective release requires verification of two primary sources before citing numbers.

3. What the press covered

In the third-way field, O Globo reported that PSDB initiated internal debate about launching Aécio Neves for President — first explicit signal of movement in the non-Bolsonarista right after Flávio's wear-and-tear. In parallel, O Globo registered that Caiado raised his tone stating that a politician "contaminated" by Vorcaro has no conditions to reach the Presidency, without naming Flávio directly. Folha de S.Paulo registered a symmetric movement: Zema told mayors that credibility is necessary to lead the country, also without citing Flávio directly.

In the Bolsonarista field, Folha reported that Michelle Bolsonaro delivered a speech ignoring Flávio and criticized "alliance with evil" (reference to Ciro Gomes). Ricardo Salles stated to BBC that "a ticket with Michelle in Flávio's place would gain much support". O Estadão reported that Flávio Bolsonaro changed marketing consultants following the Vorcaro case. Estado de Minas registered that Carlos Bolsonaro suggested that Zema is surfing on the wave of Flávio's crisis — signal of fracture within the clan itself.

In the government field, O Globo reported that Lula participated in a ceremony at TCU alongside Davi Alcolumbre — signal of institutional rapprochement between Executive and Senate after weeks of tension over the nomination of Jorge Messias to STF. In parallel, O Globo informed that PF is investigating an amendment by Flávio Bolsonaro for an NGO suspected of being part of a diversion scheme — additional investigation that adds to the Vorcaro case.

4. Day's Divergences

In summary

1. Vox Brasil confirmed Flávio's deterioration captured by AtlasIntel, with convergence between the two institutes around +7-9pp Lula in the second round. The residual market × research divergence of ~14pp points to pricing of post-survey events that Datafolha on May 22 may validate or refute.

2. Non-Bolsonaro right entered a phase of explicit movement: PSD discusses Aécio, Caiado makes speech about "contaminated by Vorcaro", Zema speaks of "credibility", Michelle criticizes "alliance with evil". Polymarket priced first material traction of the replacement narrative (Michelle 2L at 3.25%, ↑1.70pp) and Renan consolidating second place in the presidential race.

3. PL yielded for the first time in the cycle: Senate at 76.00% (↓2.50pp), 2L Flávio at 56.00% (↓6.50pp, PL base yields), Republicanos collapses to 2.50%. The technical reading: the market began to reprice PL hegemony in the Senate in parallel with Flávio's individual collapse — signal that the crisis may have consequences beyond the presidential ticket.—

Consulted Sources

Articles with direct links to news:

• O Globo — Caiado raises tone and says politician 'contaminated' by Vorcaro is unfit for presidency
• O Globo — PSDB seizes Flávio crisis to debate possible Aécio candidacy
• O Globo — Lula participates in ceremony at TCU alongside Alcolumbre
• O Globo — PF investigates Flávio Bolsonaro's amendment for NGO suspected of integrating embezzlement scheme
• Estadão — Communications coordinator of Flávio's campaign leaves position after Vorcaro crisis
• Polymarket — Brazil Presidential Election
• Polymarket — STF Justice impeachment before 2027
• Polymarket — Brazil Senate election most seats
• Polymarket — Brazil Annual Inflation 2026
• TSE — Research disclosure portal

Secondary articles (Google News redirect URL — click resolves to article):

• Poder360 — Lula has 46.8% and Flávio 38.1% in runoff, says Vox Brasil poll
• Folha de Alphaville — Vox Brasil points to Lula's lead over Flávio Bolsonaro
• CNN Brasil — PSDB discusses launching Aécio after Flávio Bolsonaro's wear
• Folha de S.Paulo — Without mentioning Flávio, Caiado says contaminated by Vorcaro cannot be president
• Folha de S.Paulo — Zema tells mayors credibility is needed to lead the country
• Folha de S.Paulo — Michelle ignores Flávio and criticizes 'alliance with evil' in reference to Ciro Gomes
• BBC — Slate with Michelle instead of Flávio 'would gain much support', says Ricardo Salles
• Estado de Minas — Carlos Bolsonaro suggests Zema is surfing on Flávio's crisis
• CNN Brasil — Real Time Big Data: Lula leads scenarios of first and second round in Ceará

---

Sources cited in this text: Vox Brasil via Poder360, Exame, Folha de Alphaville, Revista Fórum; AtlasIntel May 19; Datafolha May 16 via TSE; O Globo; Folha de S.Paulo; Estadão; BBC; CNN Brasil; Estado de Minas; Polymarket; TSE disclosure portal.

Method: this synthesis is automatically generated from the auditable data of the AFOS Analytics platform, under code rules versioned in git. All claims can be verified on the platform or in the linked sources.

Integration: to see live data and detailed candidate analysis, access the complete Dashboard. To understand the method in depth, read The Method.