2026 U.S. Senate Election: Democrats flip Republicans by March 31?

Market Overview

Markets are sorted by active status and volume. Probability history is fetched from Polymarket CLOB for the top market token IDs, similar to Bitcoin.com Markets.

Event Description

This market will resolve to “Yes” if, between the Democratic Party and the Republican Party, the Democratic Party becomes the favorite in the "Which party will win the Senate in 2026?" market (https://polymarket.com/event/which-party-will-win-the-senate-in-2026?tid=1764796601244) for any four-hour period ending by March 31, 2026, 11:59 PM ET or earlier. Otherwise, this market will resolve to “No”. The Democratic Party will be considered to have become the favorite for any four-hour period if it is ahead of the Republican Party in more individual minutes than the Republican Party is ahead of the Democratic Party during a qualifying time period. A tie in the number of minutes will not qualify. The resolution source will be the underlying minute-level price data for the “Which party will win the Senate in 2026?” market, which can be viewed using the bar chart on https://derivative.polymarket.com/index/2026-us-senate-election-democrats-flip-republicans-by or through the “Resolution” tab with the time set to show the four-hour window. Both interfaces display the same underlying data. Note: This market will resolve according to the price scoring methodology of derivative.polymarket.com.

Event Stats

Event ID

96710

Start Date

Dec 4, 2025, 1:23 AM

End Date

Mar 31, 2026, 12:00 AM

Total Markets

1

Total Volume

21.03K

Liquidity

14.44K

Last Updated

Mar 16, 2026, 1:08 AM