Which party will win the Senate in 2026?
Live Polymarket analytics for Which party will win the Senate in 2026? — $3.1M volume. Whale positions, bot activity, and order book depth on PolyCollect.
Leading Outcomes
Will the Republican Party control the Senate after the 2026 Midterm elections
57%Will the Democratic Party control the Senate after the 2026 Midterm elections
45%
Key metrics
Score = Volume + Liquidity + Spread. Whales add a small bonus.
Labels :
- Prime — score 88+ (after rounding), or strong volume + liquidity + tight spread with whales; not Thin
- Active — solid but below Prime thresholds
- Thin — low volume or wide spread (harder to trade size)
- Avoid — dead / illiquid, or market is closed
Not a prediction of how the market resolves
Number of seals (5K+), sharks (25K+) and whales (50K+) present in this market, throughout all outcomes
Outcome Analysis
Per-outcome prices, flow & whale positions
Resolution Criteria
This market will resolve according to the party that controls the Senate following the 2026 U.S. Senate elections scheduled for November 3, 2026.
Senate control is defined as having more than half of the voting Senate members, or half of the voting Senate members and the Vice Presidency.
If the outcome of this election is ambiguous given the above rules, this market will remain open until the Majority Leader of the US Senate is selected following the 2026 US general election, at which point it will resolve to the party the majority leader is affiliated with at the time of their election to that position. If the elected majority leader does not caucus with any listed party this market will resolve “Other”.
Determination of which party controls the Senate after the 2026 US Senate elections will be based on a consensus of credible reporting, or if there is ambiguity, final federal and/or state election authority certification or other final official determination of the 2026 election results.
Related Markets
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Resolution Criteria
This market will resolve according to the party that controls the Senate following the 2026 U.S. Senate elections scheduled for November 3, 2026.
Senate control is defined as having more than half of the voting Senate members, or half of the voting Senate members and the Vice Presidency.
If the outcome of this election is ambiguous given the above rules, this market will remain open until the Majority Leader of the US Senate is selected following the 2026 US general election, at which point it will resolve to the party the majority leader is affiliated with at the time of their election to that position. If the elected majority leader does not caucus with any listed party this market will resolve “Other”.
Determination of which party controls the Senate after the 2026 US Senate elections will be based on a consensus of credible reporting, or if there is ambiguity, final federal and/or state election authority certification or other final official determination of the 2026 election results.