Manifold MarketsNo KYCVerified resolution dataFairly calibratedCurrent community forecastYes 95.8%
Forecasters
37
Question type
binary
Methodology
Play-money forecasting platform
Source type
Forecast
Market data
Updated 17 hours ago
StaleMar 30, 25, 10:01 PM UTCDec 31, 26, 11:59 PM UTC
Trends
Related Markets
Related questions for context, not a comparison of equivalent contracts.
Will the Democrats gain 38+ seats in the House of Representatives in the 2026 US midterm elections?
Manifold MarketsRepublican Senate seats after the 2026 midterm elections?
PolymarketRepublican House seats after the 2026 midterm elections?
PolymarketWill there be over 215 Republican seats after the midterm elections in the House of Representatives?
Manifold MarketsWill 3 or more Democrats flip seats in the 2026 midterm elections by running on anti-AI sentiment?
Manifold MarketsHow many Republican Governors after the 2026 midterm elections?
PolymarketRules
Currently the Democrats hold 47 seats in the Senate (including the two independents who caucus with them, Sanders and King).
- This resolves YES if they GAIN seats (including any independents that caucus with them, or that a media consensus views as likely to caucus with them, or predominantly aligned with the democrat party and their views).
- If there are special elections or some sort of party flips of members between now and the election, this market will still require the democrats to gain seats during the midterms.
- That is to say, let's say one republican flips to being a democrat and there are then 48 dem seats in the senate, then they will have to have 49 seats after the midterm elections.
- If there are some sort of election-rigging claims, or the senate is disbanded, or the Trump admin stops democratic senators from being seated, or some other hijinxes ensue, I will use my judgement to ensure a fair resolution.
- Thus, I will not bet in this market.
Open markets
PoliticsPOLYMARKETPresidential Election Winner 2028
- JD Vance-0.6pt24%
- Alexandria Ocasio-Cortez13%
- Jon Ossoff12%
+49 more outcomes
- Total Vol
- $704M
- 24h Vol
- $804.1K
POLYMARKETBrazil Presidential Election
- Luiz Inácio Lula da Silva-6.0pt53%
- Flávio Bolsonaro+5.5pt45%
- Renan Santos-0.3pt1%
+16 more outcomes
POLYMARKETWhich party will gain most seats in Russian Parliamentary Election?
- United Russia (ER)+5.0pt73.3%
- New People (NL)-2.7pt22.8%
- Liberal Democratic Party of Russia (LDPR)-0.9pt3%
POLYMARKETRepublican Presidential Nominee 2028
- J.D. Vance50%
- Marco Rubio-0.2pt20%
- Tucker Carlson3%
+39 more outcomes
- Total Vol
- $701.1M
KALSHI2028 Democratic presidential nominee
- Alexandria Ocasio-Cortez-1.0pt16.2%
- Jon Ossoff-2.0pt16.2%
- Gavin Newsom14.1%
+45 more outcomes
- Total Vol
- $213.4M
KALSHINew Hampshire Democratic Senate nominee?
- Chris Pappas+1.3pt100%
- Karishma Manzur-1.8pt0%
- Jared Sullivan-0.2pt0%
+3 more outcomes
- Total Vol
- $1.1M
- Next French Presidential Election
- US announces end of Iranian blockade by which date?
- Which party will win the U.S. House?
- 2028 Republican presidential nominee
- Clarity Act (H.R.3633) signed into law in 2026?
- Prime Minister of Israel after the next election?
- NH-01 Democratic nominee?
- Democratic Presidential Nominee 2028
- Russia Parliamentary Election Winner
- Balance of Power: 2026 Midterms
- NJ-07 House winner?
Frequently asked questions
- What are the current odds for Democrats gain Senate seats in 2026 midterm elections??
- Manifold Markets prices Yes at 96% as of September 8, 2026.
- When does Democrats gain Senate seats in 2026 midterm elections? resolve?
- Democrats gain Senate seats in 2026 midterm elections? is scheduled to resolve on December 31, 2026.
- How is Democrats gain Senate seats in 2026 midterm elections? settled?
- Manifold Markets settles this market as follows: Currently the Democrats hold 47 seats in the Senate (including the two independents who caucus with them, Sanders and King).