PolymarketCheck availabilityNo KYC2% feeVerified resolution dataWell calibratedCurrent implied probability
Marcelo Castro 56.3%-0.5ptLeader of 20 outcomesVig-adjusted: raw venue quotes summed above 100% and were normalized.
Market quality
67 / 100
Medium quality24h Volume
$44.8
Liquidity
$154.5K
High liquiditySpread
2.0 pt
Moderate spreadComments
0
7d Change
+10.5 pts
Market data
Updated 9 minutes ago
Aug 17, 26, 10:06 AM UTCOct 4, 26, 6:00 AM UTC
Trends
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Related questions for context, not a comparison of equivalent contracts.
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KalshiRules
The Brazilian Federal Senate election for Piauí is scheduled to take place on October 4, 2026.
- This market will resolve according to the candidate who wins the most valid votes of any candidate at the specified election.
- Candidates will be primarily ranked by order of valid votes won.
- If two or more candidates are tied for any position, ties will be broken by alphabetical order of the candidates’ listed full names as they appear in this market.
- This market will resolve to the candidate that occupies the highest finishing position after applying this ranking.
- If the result of this election isn't definitively known by June 30, 2027, 11:59 PM ET, the market will resolve to "Other".
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Frequently asked questions
- What are the current odds for Piauí Senate Election: 1st Place?
- Polymarket prices Marcelo Castro at 56% as of September 8, 2026.
- When does Piauí Senate Election: 1st Place resolve?
- Piauí Senate Election: 1st Place is scheduled to resolve on October 4, 2026.
- How is Piauí Senate Election: 1st Place settled?
- Polymarket settles this market as follows: The Brazilian Federal Senate election for Piauí is scheduled to take place on October 4, 2026.