PolymarketCheck availabilityNo KYC2% feeVerified resolution dataFairly calibratedCurrent implied probability
Democrat 99%+0.6ptLeader of 13 outcomes
Market quality
68 / 100
Medium quality24h Volume
$12.8
Liquidity
$30.1K
High liquiditySpread
0.3 pt
Tight spreadComments
1
7d Change
+1.4 pts
Market data
Updated 17 minutes ago
Oct 13, 25, 9:45 PMNov 3, 26, 12:00 AM
Trends
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
0%
Rules
This market will resolve according to the winner of the 2026 midterm Massachusetts U.S. Senate election, inclusive of any run-offs.
- A candidate shall be considered to represent a party in the event that he or she is the nominee of the party in question.
- Candidates other than the Democratic or Republican nominee (e.g., Greens, Libertarian, independent) may be added at a later date.
- Candidates who run as independents will not be encompassed by the “Democrat” or “Republican” options regardless of any affiliation they may have with the party.
- The resolution source for this market is the Associated Press, Fox News, and NBC.
- This market will resolve once all three sources call the race for the same candidate.
Prediction Source Comparison
CoinRithm reference Democrat 98% · 2 venues · 2 pt band
- Also available on Kalshi — Massachusetts Senate winner? · Democratic party 95%
- Also available on Smarkets — Massachusetts Senate Election Winner · Democrat 98%
Open markets
Politics
KALSHI2028 Democratic presidential nominee
- Alexandria Ocasio-Cortez16.2%
- Jon Ossoff16.2%
- Gavin Newsom+1.0pt15.2%
+44 more outcomes
- Total Vol
- $187.5M
- 24h Vol
- $987.8K
POLYMARKETBrazil Presidential Election
- Luiz Inácio Lula da Silva62.8%
- Flávio Bolsonaro32.4%
- Renan Santos+0.3pt4.9%
+29 more outcomes
- Total Vol
KALSHISouth Carolina Republican Senate special primary winner?
- Darline Graham+2.0pt64.2%
- Ralph Norman-4.0pt27.5%
- Pamela Evette0.9%
+8 more outcomes
- Total Vol
- $13.5M
POLYMARKETDemocratic Presidential Nominee 2028
- Alexandria Ocasio-Cortez18%
- Gavin Newsom15%
- Jon Ossoff+0.2pt14%
+125 more outcomes
- Total Vol
POLYMARKETPresidential Election Winner 2028
- JD Vance20%
- Alexandria Ocasio-Cortez13%
- Marco Rubio+0.4pt12%
+125 more outcomes
- Total Vol
- $690.7M
KALSHI2028 Republican presidential nominee
- J.D. Vance-1.0pt45.3%
- Marco Rubio-3.0pt21.1%
- Ron DeSantis-0.2pt5.3%
+35 more outcomes
- Total Vol
- $58.7M
- US announces end of Iranian blockade by which date?
- Next French Presidential Election
- What will Trump say during his rally with Darline Graham?
- Which party will gain most seats in Russian Parliamentary Election?
- Which party will win the U.S. House?
- 2028 U.S. Presidential Election winner?
- Brazil Presidential Election First Round: 2nd Place
- Republican Presidential Nominee 2028
- Clarity Act (H.R.3633) signed into law in 2026?
- 2026 Midterms: Congress Balance of Power?
Frequently asked questions
- What are the current odds for Massachusetts Senate Election Winner?
- Polymarket prices Democrat at 99% as of August 21, 2026.
- When does Massachusetts Senate Election Winner resolve?
- Massachusetts Senate Election Winner is scheduled to resolve on November 3, 2026.
- How is Massachusetts Senate Election Winner settled?
- Polymarket settles this market as follows: This market will resolve according to the winner of the 2026 midterm Massachusetts U.S. Senate election, inclusive of any run-offs.
- Where else is Massachusetts Senate Election Winner listed?
- The same question is also listed on Kalshi, Smarkets.