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

Rank #15128·0 on watchlist
polymarket
Resolves Mar 31, 2026 BinaryUpdated just nowPolitics
Current YES Probability
16.0%0.0% (24h)
NO: 84.5% Updated just now
Analysis...
Volume (24h)
Total Volume
$2,256.67
Liquidity
$9,122.64
Thin
Volatility
Market Split
31%

Market Microstructure

Mid
16%
Spread
1.00% (645bps)
Depth
$9.1k
Tick Size
0.10%

Market Info

Resolution Date
Mar 31, 2026
Resolution Source
Platform Decision
Category
Politics
No chart data available.

Markets Across Platforms

PlatformYesNoAction
polymarket--Trade

Resolution Rules

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.

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