PolymarketCheck availabilityNo KYCVerified resolution dataWell calibratedCurrent implied probability
Rui Costa 79.8%+3.0ptLeader of 10 outcomesVig-adjusted: raw venue quotes summed above 100% and were normalized.
Market quality
65 / 100
Medium quality24h Volume
$3K
Liquidity
$100.6K
High liquiditySpread
6.0 pt
Wide spreadComments
0
7d Change
+2.5 pts
Market data
Updated 26 minutes ago
Aug 17, 26, 9:56 AM UTCOct 5, 26, 3:59 AM UTC
Trends
Venue terms
Source: Polymarket
Informational venue terms only; CoinRithm paper trading uses its own rules.
- Minimum order (shares):
- 5
- Tick size:
- 1 percentage points
- Fees:
- Yes
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Related questions for context, not a comparison of equivalent contracts.
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PolymarketRules
The Brazilian Federal Senate election for Bahia 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".
Open markets
Politics
KALSHI2028 Democratic presidential nominee
- Jon Ossoff17.5%
- Alexandria Ocasio-Cortez15.5%
- Gavin Newsom13.4%
+45 more outcomes
- Total Vol
- $225.5M
- 24h Vol
- $1.3M
KALSHIWhich party will win the U.S. House?
- Democratic Party-0.7pt91%
- Republican Party+0.5pt9%
- Total Vol
- $37M
- 24h Vol
- $1.1M
KALSHIWhich party will win the U.S. Senate?
- Democratic Party-4.0pt61%
- Republican Party+3.0pt39%
- Total Vol
- $10.5M
- 24h Vol
- $668K
POLYMARKETBrazil Presidential Election
- Flávio Bolsonaro-2.1pt55.5%
- Luiz Inácio Lula da Silva+2.0pt43.6%
- Renan Santos-0.2pt1%
+16 more outcomes
KALSHI2026 Midterms: Congress Balance of Power?
- Democrats sweep-5.0pt59.8%
- D-House, R-Senate+4.0pt31.4%
- Republicans sweep+0.8pt7.8%
+1 more outcomes
KALSHIMaine Senate winner?
- Troy Jackson-4.0pt68%
- Susan Collins+5.0pt32%
- Total Vol
- $6.4M
- 24h Vol
- $581.7K
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Frequently asked questions
- What are the current odds for Bahia Senate Election: 1st Place?
- Polymarket prices Rui Costa at 79.8% as of September 25, 2026.
- When does Bahia Senate Election: 1st Place resolve?
- Bahia Senate Election: 1st Place is scheduled to resolve on October 5, 2026.
- How is Bahia Senate Election: 1st Place settled?
- Polymarket settles this market as follows: The Brazilian Federal Senate election for Bahia is scheduled to take place on October 4, 2026.