Brazil Presidential Election

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Active sub-markets

Market context

A presidential election is scheduled for Brazil on 4 October 2026, with a likely second round if no candidate secures over 50% in the first vote. Current polls show incumbent Luiz Inácio Lula da Silva leading opposition Senator Flávio Bolsonaro, though the margin remains razor-thin, echoing the 2022 contest that saw Bolsonaro lose by just 1.2% after a fierce runoff.

Historically, Brazilian presidential races since 1994 have frequently required a second round, with 2022 being the most recent example. In that election, Lula’s 48.4% in the first round forced a runoff where he ultimately won 50.9%, demonstrating how early leads can shift dramatically. The current 0% implied probability for any specific winner on this prediction market diverges sharply from Kalshi’s 63% odds for Lula and 25% for Bolsonaro, suggesting either a lack of liquidity or a consensus that the outcome remains too volatile to price accurately at this stage.

Traders should monitor the Banco Master scandal involving Flávio Bolsonaro, which has already tightened the poll gap from a 5% Lula lead to a statistical tie, and watch for upcoming AtlasIntel and Datafolha surveys released in late July. A Reuters report from May 22 confirmed that Lula’s 40% first-round projection faces a 31% challenger, but a hypothetical runoff now shows Lula at 48% versus Bolsonaro at 41%, indicating the scandal’s potential to reshape the race. Key dates include the official campaign launch in August and the first-round voting on 4 October, with any ambiguity resolved by the Superior Electoral Court’s final results.

Sources: 1 · 2 · 3 · 4 · 5

Methodology

Methodologically we separate two layers: the live probability (Polymarket mid-price) and the platform attributes (fee, KYC, settlement currency, payment rails). The odds column is filled only where we have clean data — that avoids the made-up numbers that get a network demoted when search engines cross-check against the source venue.

Resolution & payout

At resolution the UMA oracle takes over: a proposer posts the outcome with a bond, any token holder can dispute within two hours. Without dispute the result is accepted and the smart contract distributes USDC instantly.

On Kalshi (CFTC-regulated) resolution runs through their in-house clearing engine in USD. Betfair Exchange settles after match end in the account's local currency. Manifold pays no cash — only its in-platform "mana" currency.

FAQ

Is this market available outside the US?

PolyGram is available in most jurisdictions where Polymarket isn't directly accessible. Polymarket itself is geo-blocked in the US/UK/EU. Always check local regulations.

What's the difference between YES and NO shares?

A YES share pays $1.00 if the event happens, $0 otherwise. A NO share pays $1.00 if the event doesn't happen. The market price between 0¢ and 100¢ is the implied probability.

What does it cost to trade on PolyGram?

Zero. PolyGram routes every order to the live Polymarket order book; the only cost is the Polygon network fee, typically under $0.01 per transaction.

Do I need to KYC for this market?

Not under $1,500 of lifetime trading volume. Above that threshold, PolyGram triggers a quick verification flow that finishes in minutes.

How reliable are the quoted odds?

The YES/NO percentages are the live mid-prices of the Polymarket order book. On deep markets they move every few seconds; on thinner ones you'll see short plateaus.