Platform comparison
| Platform | YES odds | NO odds | Fee | KYC | Settlement | |
|---|---|---|---|---|---|---|
Polymarket (via Polymarket Alternative) Pick polygram.ink (preferred broker) |
99% | 1% | 0% (USDC on-chain) | No-KYC up to $1,500 | USDC, auto via UMA oracle | Open the market → |
Polymarket (direct) polymarket.com |
99% | 1% | 0% | Geo-blocked in US/UK/EU | USDC, on-chain | Open the market → |
Kalshi kalshi.com |
— | — | Up to 7% per trade | US-only, KYC required | USD | Open the market → |
Betfair Exchange betfair.com |
— | — | 2-5% commission | Full KYC from first trade | GBP / EUR | Open the market → |
Manifold Markets manifold.markets |
— | — | Play-money (mana) | None — play-money | Mana (no cash-out) | Open the market → |
Outcome probabilities
Current market-implied probability for each outcome, from the live order book.
| Outcome | Probability |
|---|---|
| Rafael Fonteles | 99% |
| Placeholder 1 | 50% |
| Placeholder 2 | 50% |
| Placeholder 3 | 50% |
| Placeholder 4 | 50% |
| Placeholder 5 | 50% |
| Placeholder 6 | 50% |
| Placeholder 7 | 50% |
| Placeholder 8 | 50% |
| Placeholder 9 | 50% |
| Placeholder 10 | 50% |
| Placeholder 11 | 50% |
| Placeholder 12 | 50% |
| Placeholder 13 | 50% |
| Placeholder 14 | 50% |
| Other | 50% |
| Dra. Lúcia Santos | 0% |
| Elizeu Aguiar | 0% |
| Geraldo Carvalho | 0% |
| Gustavo Feijó | 0% |
| Joel Rodrigues | 0% |
| Lourdes Melo | 0% |
| Professor Gisvaldo | 0% |
| Professor Jurity | 0% |
| Ravenna da Inclusão | 0% |
| Santiago Belizário | 0% |
Market context
Based on real-money crowd forecasting, piauí governor election winner stands at 99% likelihood according to current market consensus. The Piauí gubernatorial election is scheduled to take place in Brazil on October 4, 2026, with a runoff on October 25, 2026, if no candidate receives a majority of the valid votes …
Methodology
We read Piauí Governor Election Winner from four platform perspectives: Polymarket (on-chain CLOB), Kalshi (CFTC-regulated exchange), Betfair Exchange (sports book exchange), Smarkets (peer-to-peer betting exchange). Polymarket's live mid is the canonical probability; the side-by-side columns benchmark fees, KYC, settlement currency and deposit rails so you can choose the venue that fits your jurisdiction and trade size.
Resolution & payout
Settlement is the biggest difference between the four platforms: Polymarket on-chain in USDC (instant), Kalshi USD via CFTC (T+1), Betfair and Smarkets in local currency via bank withdrawal (T+1 to T+3). On-chain settlement clears in minutes — the fastest payout path of the four.
FAQ
- What does Polymarket cost vs Kalshi?
- Polymarket: 0% fees, only Polygon network costs (~$0.01/trade). Kalshi: up to 7% per trade plus spread. For high-frequency traders, Polymarket is dramatically cheaper.
- What about Smarkets as an alternative?
- Smarkets is a UK betting exchange with a lower default commission (2%) than Betfair. Liquidity on political markets is below Polymarket, comparable to Kalshi. Geo-blocked in many jurisdictions.
- Which platform is accessible globally?
- Polymarket is geo-blocked in the US/UK/EU. Kalshi is US-only. Betfair and Smarkets are UK-restricted. Polymarket Alternative has a different geo footprint and routes to Polymarket's order book at 0% fees.
- Are all these platforms regulated?
- No. Kalshi is CFTC-regulated (US). Betfair and Smarkets are UK Gambling Commission licensed. Polymarket operates without explicit regulation — a different risk profile than a regulated sportsbook.
- Which platform supports Klarna/SOFORT?
- Directly: none. Polymarket accepts only USDC on Polygon. Polymarket Alternative offers a fiat on-ramp via Klarna or SOFORT (DE/AT/CH) and converts internally to USDC for the Polymarket order book. T+1 processing.
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