Which party will win the Senate in 2026? on Polymarket: Democratic Party leads at 73%, ahead of Republican Party at 28%. 2 outcomes are listed, $16.1M has traded on the event, $5.1M sits in the books; it closes Nov 4, 2026. The week's biggest move is Democratic Party, +8 pts. Every smart wallet on Democratic Party on Polynyx ↗
Each outcome is its own Polymarket market; the odds are its live Yes price, the move is over the past week. Open an outcome for its odds history, the smart money on each side, holders and the tape.
| Outcome | Odds | 7d | Volume | Status |
|---|---|---|---|---|
| 1Democratic Party | 73% | live | ||
| 2Republican Party | 28% | live |
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