2026 Midterms: Democratic House Seats?
2026 Midterms: Democratic House Seats?
311 chatting
210+
96%96¢1.042
210+
1.04x
215+
91%91¢1.099
215+
1.1x
218+
93%93¢1.075
218+
1.08x
220+
89%89¢1.124
220+
1.12x
225+
81%81¢1.235
225+
1.23x
230+
78%78¢1.282
230+
1.28x
235+
98%98¢1.020
235+
1.02x
240+
64%64¢1.562
240+
1.56x
245+
38%38¢2.632
245+
2.63x
250+
25%25¢4.000
250+
4.0x
This market will settle to Yes if the Democratic Partys seat count in the U.S. House of Representatives is greater than or equal to 210 as a result of the 2026 United States midterm election scheduled for November 3, 2026. Outcome sourced from relevant state electoral authorities, and the United States House of Representatives.
The seat count includes all House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress. Where a seat is decided by a runoff, the runoff result will determine attribution of that seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation, or vacates their seat, between election day and the formal organization of Congress, the seat is attributed to the party under which the member was elected.
House members elected as independents who formally caucus with, or, for newly elected members, who announce their intent to caucus with, the Democratic party are included in the count. If the caucus decisions of members of the House elected as independents cannot be determined on the date of the election, this market may remain open until the earlier of (i) an announcement from the relevant members of their intents to caucus, or (ii) January 4th, 11:59 PM ET of the following calendar year. If no such announcement is made by January 4th, 11:59 PM ET of the following calendar year, the member will not count towards the seat count of any party.
- Upcoming: Event startNov 3, 2026 at 12:00 PM EST
- Upcoming: Market closesNov 3, 2026 at 11:59 PM EST
- Upcoming: PayoutUsually within 25 min of market closing
Insider trading and market manipulation are prohibited. Polymarket US rules prohibit, among other things, insider trading, trading by anyone who can control or influence the outcome, and market manipulation.
Candidates in this race may not trade on this market. You also may not trade on this market if any of the following applies to you:
Do not trade on stolen confidential information. You may not trade on any contract if you possess confidential information about the outcome or likely outcome of the underlying event, if using that information would violate a preexisting duty or obligation of trust or confidence you owe to another person or entity.
Do not trade on illegal tips. You may not trade on confidential information that was passed to you by someone who owed a preexisting duty of trust or confidence to someone else, if you know or have reason to know that the person who shared the information would be prohibited from trading on it themselves.
Do not trade on an outcome you can influence. You may not trade on any contract if you hold a position of authority or influence sufficient to affect the outcome of the underlying event.
Do not trade to manipulate market prices or mislead others. You may not place trades or orders for the purpose of artificially influencing market prices, creating a false or misleading impression of market activity, or distorting the information reflected by market prices. Trading intended to manipulate market prices or mislead others about the likelihood of an outcome is strictly prohibited.
What is the “2026 Midterms: Democratic House Seats?” prediction market?
This market lets you trade on the outcome of 2026 Midterms: Democratic House Seats?. Prices reflect the market's current estimate of each outcome's probability.
How are prices determined?
Prices move with supply and demand as traders buy and sell outcome shares. A price of 60¢ implies the market estimates a 60% chance.
When does this market resolve?
The market resolves when the outcome is officially determined, per the resolution rules above. Winning shares redeem at $1.
Can I sell my position before the market resolves?
Yes. You can sell your shares at the current market price any time before resolution — you never have to wait for the outcome.
What happens if I hold winning shares?
Each winning share redeems at $1 once the market resolves. Your profit is the difference between $1 and what you paid per share.
Where do the odds come from?
Odds come from real traders backing their views with money, not from a bookmaker. Research shows prediction markets are among the most accurate forecasting tools available.