TOTAL VOLUME:
$142.3b
24H VOL:
$107,419,736
24H TRANSACTIONS:
2,643,541,936
OPEN INTEREST:
$1,594,026,835
471,138
Markets across
35,775
events
MATCHED EVENTS:
2,926
PLATFORM COVERAGE:
5
Polymarket:
38%
VS.
Kalshi:
62%
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Democratic Party
all
4 markets
Polymarket
Limitless
Kalshi
Opinion
consensus
News
Positive
Negative
Neutral
Hover marker for details
Vol.
·
Resolves Feb 1, 2027
Latest in Politics
Time left: 20d:01h:09m
Will the Democratic Party control the House after the 2026 Midterm elections?
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Description
This group forecasts which political party will control the U.S. House of Representatives after the 2026 midterm elections. Control is determined by holding a majority of voting seats, or, in the event of a tie, by the party affiliation of the elected Speaker of the House.
PredictionHero - Resolution Divergence Alerts (RDA)
Unified Resolution Criteria (Consistent across platforms)
All platforms align on the core resolution criteria: majority of seats determines control, with the Speaker's affiliation as a tiebreaker, and reliance on credible reporting.Primary resolution logic: Consensus of credible reporting, final federal and/or state election authority certification, and official House proceedings.Core resolution logic:
- Control is determined by holding a majority of voting seats in the House of Representatives.
- In the event of a tie, the party affiliation of the elected Speaker of the House determines control.
- Runoff elections are included in determining the seat count.
- Independent members are counted based on their declared or actual caucus affiliation.
Edge cases & clarifications:
- Speaker Affiliation Ambiguity: If the elected Speaker does not caucus with a listed party, the 'Other' option (where available) will resolve as Yes, otherwise the market may remain open until clarification.
- Member-Elect Party Change: If a member-elect changes party affiliation between election day and the formal organization of Congress, the seat is attributed to the party under which the member was elected.
- Independent Caucus Decision: Independent members are attributed to a party if they formally caucus with that party, or announce their intent to do so. If caucus decisions are unclear by January 4th of the following year, they are not counted.
Polymarket
This market will resolve according to the party that wins control of the United States House of Representatives in the 2026 United States midterm election. A party wins control of the United States House of Representatives if it wins a majority of the chamber’s voting seats. If no party wins a majority of voting seats, the chamber will be deemed controlled by the party with which the first elected Speaker of the House of the Congress that convenes after the 2026 midterm election is affiliated. The following rules govern the counting of seats for determining which party wins control of the chamber. All House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress are included. 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, a party are included in that party’s 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. The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
Kalshi
If the Democratic Party has won control of the House in 2026, then the market resolves to Yes. If the Republican Party has won control of the House in 2026, then the market resolves to Yes.
Limitless
Additional context — Updated October 14, 2026 This market's rules have been updated for clarity. This market will resolve according to the party that wins control of the United States House of Representatives in the 2026 United States midterm election. A party wins control of the United States House of Representatives if it wins a majority of the chamber’s voting seats. If no party wins a majority of voting seats, the chamber will be deemed controlled by the party with which the first elected Speaker of the House of the Congress that convenes after the 2026 midterm election is affiliated. The following rules govern the counting of seats for determining which party wins control of the chamber. All House elections in the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th Congress are included. 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, a party are included in that party’s 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. The resolution sources for this market will be official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting.
Opinion
This market will resolve according to the party that controls the House of Representatives following the 2026 U.S. House elections scheduled for November 3, 2026. House control is defined as having more than half of the voting members of the U.S. House of Representatives. If the outcome of this election is ambiguous given the above rules, this market will remain open until the Speaker of the House is selected following the 2026 U.S. general election, at which point it will resolve to the party the Speaker is affiliated with at the time of their election to that position. If the elected Speaker does not caucus with any listed party this market will resolve “Other”. Determination of which party controls the House after the 2026 U.S. House elections will be based on a consensus of credible reporting, or if there is ambiguity, final federal and/or state election authority certification or other final official determination of the 2026 election results.
Frequently asked questions
Prediction market odds, like those found in this market, often offer a different perspective than traditional polling averages. While polls capture a snapshot of current voter sentiment, this market reflects what traders believe will *actually* happen, incorporating a wider range of information and anticipating strategic shifts. Polling averages can be susceptible to biases and inaccuracies, whereas the price action in this market aggregates the wisdom of the crowd. The 0.2 difference between prediction market probabilities and polling data can be a valuable signal for understanding the potential for unexpected election outcomes.
Prices on Polymarket and Kalshi can diverge for several reasons. Different user bases, trading fees, and market-specific liquidity can all contribute to price discrepancies. Polymarket and Kalshi can show different implied probabilities for the same outcome because of liquidity, fee structure, participant mix, and how each venue defines the contract. Furthermore, the way each platform handles order types and allows for market manipulation can influence price discovery. Currently, Polymarket currently favors Will the Democratic Party control the House after the 2026 Midterm elections? at 90.5%, while Kalshi leans toward Will Democrats win the House in 2026? at 90.3%. These differences highlight the dynamic nature of prediction markets and the importance of considering multiple sources of information.
This market resolves around Feb 1, 2027, with the outcome confirmed once the event is verifiable from credible public reporting. Resolution will be based on which party controls a majority of seats in the House of Representatives following the 2026 midterm elections. The outcome will be determined by official election results and verified against credible public sources. Traders should monitor news and election results closely as the Feb 1, 2027 approaches to understand the factors influencing the final outcome of this market.
Numerous signals and events could significantly impact this market. Major economic shifts, significant legislative developments, unexpected candidate announcements, and shifts in national security concerns could all influence trader sentiment. Key state-level election forecasts and changes in voter registration data will also be closely watched. Unexpected political scandals or gaffes by prominent figures could also cause rapid price movements. Monitoring these factors and their potential impact on the 2026 elections is crucial for understanding the dynamics of this market.
