---
title: "Which party will win the U.S. Senate? — In 2026"
canonical_url: https://betcrypto.now/events/which-party-will-win-the-us-senate-in-2026
status: live
trading_closes_at: 2027-02-01T15:00:00+00:00
total_volume_usd: 19789854.96
venues: ["Kalshi", "Polymarket"]
categories: ["Politics"]
prices_as_of: 2026-10-09T09:54:58+00:00
publisher: BetCrypto
data_api: https://betcrypto.now/api/v1/events/which-party-will-win-the-us-senate-in-2026
---

# Which party will win the U.S. Senate? — In 2026

Live · $19,789,855 traded · listed on Kalshi, Polymarket

## About

This market may be determined early based on a consensus of media calls projecting control of the U.S. Senate. See full rules for details. Otherwise, victory will be determined by the party identification of the President pro tempore of the Senate on February 1, 2027.

_From Kalshi's listing._

## Main market

| Outcome | Probability | Cheapest | Kalshi | Polymarket |
|---|---|---|---|---|
| Democratic Party | 62% | 62¢ on Kalshi | 62¢ | 63¢ |
| Republican Party | 37% | 36¢ on Polymarket | 39¢ | 36¢ |

## Open on a venue

- [Kalshi](https://betcrypto.now/go/e/1302?via=md)
- [Polymarket](https://betcrypto.now/go/e/4956?via=md)

---

Probability is the cross-venue consensus (book midpoints, 0–100%). Venue columns are what buying costs there (the ask). Prices move constantly; re-check at the canonical URL or https://betcrypto.now/api/v1/events/which-party-will-win-the-us-senate-in-2026.

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