How many House seats will Republicans hold after the Midterms?
Short Answer
Both the model and the market expect Republicans to hold 203-207 House seats after the Midterms, with no compelling evidence of mispricing.
1. Market Behavior & Drivers
This market has traded in a stable, narrow range between 16.0% and 19.0% probability since its inception. The price established a floor at 16.0% before moving to its peak of 19.0% around July 31. It has since settled near the top of this range at 18.0%. The overall trend is sideways, suggesting a consensus has formed around a low probability for the "YES" side of the contract. The key technical levels are clear: support at 16.0% and resistance at 19.0%.
The brief price appreciation to 19.0% occurred on significant volume (250 contracts), but recent trading has been very light, with only 9 contracts traded at the current 18.0% level. This suggests the initial move up had some conviction, but the market has since entered a period of low activity and price consolidation. The general market sentiment, reflected in the consistently sub-20% price, aligns with external news context. As of early August, major forecasting models from sources including Decision Desk HQ and The Economist indicate that Democrats are favored to win a House majority.
The price action suggests the market is pricing in a low but persistent probability of a Republican hold, a view that has remained largely unchanged. The tight trading band indicates that no recent information has been sufficient to meaningfully shift this outlook. The market's stability implies traders see current conditions, where Democrats are favored, as the baseline reality, with the price reflecting the odds of an upset.
- Since last update (~100d): Model increased +16.2pp for 203-207 (market +2.0pp), flipping the edge, indicating model conviction.
- Model also raised 198-202 odds +13.9pp, leading the market and flipping the edge.
- The model reduced 'Below 193' odds by -17.1pp, tracking a -21.0pp market decline.
- Model odds for 'Above 237' fell -10.9pp, flipping the edge despite market gains (+1.8pp).
- Republican seat counts around 203-207 appear most likely, implying a Democratic House majority.
- Democratic House control is highly probable, driven by clear primary turnout enthusiasm.
- Republicans holding below 193 seats could result from a wide Democratic popular vote margin.
Who Wins and Why
| Outcome | Market | Model | Why |
|---|---|---|---|
| Below 193 | 18.0% | 14.0% | Democratic primary turnout data shows a clear enthusiasm advantage, suggesting a strong Democratic wave. |
| 223-227 | 4.9% | 3.3% | This implies Republican seat gains, which contradicts the consensus predicting a Democratic takeover and GOP losses. |
| 228-232 | 2.8% | 1.9% | This Republican landslide scenario is overwhelmingly contradicted by all major forecasting models and prediction markets. |
| 218-222 | 7.6% | 5.1% | This outcome implies Republican House retention, which contradicts the overwhelming consensus favoring a Democratic majority. |
| Above 237 | 3.8% | 3.3% | No provided research explicitly supports Republicans winning above 237 seats, making it an extremely unlikely scenario. |
Current Context
Forecasts and markets favor Democrats to win the U.S. House. As of August 6, 2026, major forecasting models and polling data consistently indicate Democrats are favored to win a majority of seats in the U.S. House of Representatives [1][2][3][4][5][6]. Prediction markets in mid-2026 show significant betting odds, roughly 81-83%, favoring a Democratic House win [6]. Decision Desk HQ, as of August 6, 2026, forecasts a 60% probability for Democrats to control the House, against 40% for Republicans [1][7]. This outlook often cites favorable generic ballot polls and economic/political headwinds for the Republican party [1][2][3][4][5][6]. Republicans are simultaneously favored to retain control of the Senate [6].
The House majority will depend on a narrow seat margin. The U.S. House of Representatives currently has a Republican majority of 217 to 213, with four vacancies, as of April 14, 2026 [8]. A total of 218 seats are required for a majority [1]. Political analysts suggest that a Democratic popular vote margin of 5-6 points could result in a gain of approximately 20-25 House seats for Democrats, sufficient to flip control [9]. Mid-decade redistricting efforts could shift seat counts: Republicans could gain up to 13 additional seats in states like Texas, Florida, Missouri, North Carolina, and Ohio, while Democrats could gain up to 10 seats in states such as California, Utah, and Virginia [10]. Decision Desk HQ simulations suggest that House control remains competitive if elections were held in early August 2026 [1]. The 2026 midterm elections are scheduled for November 3, 2026, with primary elections occurring between early March and mid-September [11][12][13][14][15].
Sources (15)
- 12026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 2US House of Representatives 2026 forecast | The Economisteconomist.com
- 3Democrats lead narrowly in the House while Republicans have an edge in the Senate, according to our final MRP estimatesyougov.com
- 4GOP midterm prospects darken as Trump approval falls | Brookingsbrookings.edu
- 5Who's leading in the 2026 midterm elections?yougov.com
- 6Who will control Congress in 2026? Latest polls, odds and forecastsusatoday.com
- 72026 Election Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 8Tony Gonzales’ resignation leaves Texas’ 23rd Congressional District vacant - Ballotpedia Newsnews.ballotpedia.org
- 9It Don’t Mean a Thing if it Ain’t Got That Swing: The Outlook for Electoral Accountability in 2026 - Sabato's Crystal Ballcenterforpolitics.org
- 10Redistricting is rampant ahead of the US House midterm elections. What states are taking action? | The Associated Pressap.org
- 112026 Election Calendar: Primary and General Election Dates | AP Newsapnews.com
- 122026 Midterm Elections | Key Races, Historic Precedents, States to Watch, Gerrymandering, & Integrity | Britannicabritannica.com
- 13Congressional elections and midterm elections | USAGovusa.gov
- 14United States Congress elections, 2026ballotpedia.org
- 15When are the midterm elections 2026? Who is leading in midterms, pollsusatoday.com
2. Price Chart
Historical Price (Probability)
Outcome probability
Date
3. Market Data
Contract Snapshot
This contract resolves to "YES" if Republicans hold fewer than 193 House seats after the Midterms, and "NO" if they hold 193 or more. The market begins on November 3, 7:00 am EST, with a maximum payout date of February 1, 2027. The provided content does not detail any special settlement conditions beyond the specified seat count threshold.
Available Contracts
Market options and current pricing
| Outcome bucket | Yes (price) | No (price) | Last trade probability |
|---|---|---|---|
| Below 193 | $0.19 | $0.82 | 18% |
| 198-202 | $0.15 | $0.86 | 15% |
| 203-207 | $0.16 | $0.85 | 15% |
| 208-212 | $0.13 | $0.88 | 11% |
| 213-217 | $0.12 | $0.89 | 11% |
| 193-197 | $0.11 | $0.90 | 10% |
| 218-222 | $0.08 | $0.92 | 8% |
| 223-227 | $0.05 | $0.95 | 5% |
| Above 237 | $0.04 | $0.97 | 4% |
| 228-232 | $0.03 | $0.98 | 3% |
| 233-237 | $0.02 | $0.98 | 2% |
Market Discussion
As of early August 2026, prediction markets and quantitative forecasting models estimate Republicans will likely hold 204–209 House seats, falling short of the 218 required for a majority [1][2][3]. These models and markets assign a high probability (approximately 80–86%) to Democrats winning control of the U.S. House [1][4][5][6]. Specifically, the Decision Desk HQ forecast model, as of August 6, 2026, projects Democrats to win 227 seats and gives them a 63% probability of controlling the House [4][7].
Sources (7)
- 1House Control 2026 Odds: Model Verdict Vs. Market | OddsShopperoddsshopper.com
- 2Democrats lead narrowly in the House while Republicans have an edge in the Senate, according to our final MRP estimatesyougov.com
- 3US House of Representatives 2026 forecast | The Economisteconomist.com
- 42026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 5Which party will win the House in 2026?polymarket.com
- 6Prediction markets signal Democrats as clear favourites to win US House in 2026 midterms | Noah Intelligencenoah-news.com
- 7Decision Desk HQ Releases 2026 Congressional Forecast Model | DDHQdecisiondeskhq.com
4. Trust Index
Largest single print on KXRHOUSESEATS-27-193 carried 82% of its $7,888 tape (window is 100% of 24h flow)
Risk flag· Large trades
Trust score capped by a severe activity flag.
How it adds up
Integrity80% of score82Good
Trade quality20% of score56Caution
Includes the cost to trade: a $10,000 order can't be filled here because the order book is too thin.
Weighted blend77overridden
Safety capSevere trading anomaly30High Risk
A severe trading anomaly caps the score at 30, whatever the blend.
Trust profile
Integrity4 screens run · 6 don't apply
5. What are the current 2026 House seat projections from leading non-partisan election models like The Cook Political Report and FiveThirtyEight, and what key assumptions underpin their forecasts?
| DDHQ Democratic Probability | 62%–63% (Decision Desk HQ [1][2][3]) |
|---|---|
| Cook Political Report Toss-up Seats | 18 (The Cook Political Report [4][5][6][7]) |
| Prediction Market Democratic Control | 80%–84% (Kalshi [1][8][9]) |
Leading models and markets currently project a Democratic House takeover in 2026. As of August 6, 2026, the Decision Desk HQ (DDHQ) model forecasts Democrats are narrowly favored to win, with a 62%–63% probability compared to 37%–40% for Republicans [1][2][3]. The DDHQ model estimates that the most likely outcome is Democrats securing 227 seats in the U.S. House [3]. Similarly, prediction markets on platforms like Kalshi strongly favor Democrats, pricing their control at approximately 80–84% [1][8][9].
The Cook Political Report indicates a highly competitive House environment. As of July 16, 2026, The Cook Political Report rated the House as extremely competitive, identifying 18 toss-up seats [4][5][6][7]. Their analysis also suggests that if the Alabama redistricting map is upheld, Republicans are favored in 212 seats and Democrats in 205 [4][5][6][7]. Key assumptions underpinning these forecasts generally include the generic ballot polling trend, the impacts of mid-decade redistricting, district-level political makeup (Cook PVI), and national presidential approval ratings [8][9][10]. The DDHQ methodology specifically incorporates structural fundamentals, aggregate public polling, and aggregated prediction market data using various algorithms [11].
Sources (11)
- 12026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 22026 Election Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 3Decision Desk HQ Releases 2026 Congressional Forecast Model | DDHQdecisiondeskhq.com
- 42026 CPR House Race ratingscookpolitical.com
- 52026 House Race Ratings: Another Knife Fight for the Majoritycookpolitical.com
- 6Cook Political Report 2026 House Ratings - 270toWin270towin.com
- 7Taking Stock of the House Math | Cook Political Reportcookpolitical.com
- 8House Control 2026 Odds: Model Verdict Vs. Market | OddsShopperoddsshopper.com
- 9US House of Representatives 2026 forecast | The Economisteconomist.com
- 10The 2026 House Map is No More Favorable to Republicans than the 2018 Map was - Sabato's Crystal Ballcenterforpolitics.org
- 11https://votes-docs.decisiondeskhq.com/2026-forecast-methodologyvotes-docs.decisiondeskhq.com
6. How might key economic data released in Q3 and Q4 2026, such as the final pre-election jobs and inflation reports, be expected to shift the generic congressional ballot?
| GDP Growth | Near 2% (August 2026) [1] |
|---|---|
| Payroll Growth | Around 111,000 (August 2026) [1] |
| Democratic Generic Ballot Lead | 4% to 5% (August 2026) [2][3][4] |
Economic data released in late 2026 will likely impact the congressional ballot. Key economic reports in Q3 and Q4 2026, including final pre-election jobs and inflation figures, are anticipated to influence the generic congressional ballot, especially given voter concerns regarding the cost of living and its effect on President Trump's approval rating [5]. However, political science research suggests that the direct and independent impact of economic indicators on midterm ballot outcomes is often less pronounced compared to broader presidential approval and ideological balancing patterns [6][7][8].
The US economy shows moderate growth amid inflation concerns as of August 2026. Current conditions are characterized by moderate GDP growth near 2%, a stabilizing labor market with payroll growth around 111,000, and inflation that is cooling but remains elevated [1]. Risks such as energy prices and the sustainability of AI investment are noted, though there is potential for further inflation cooling [1][9][10]. President Trump's approval rating on the economy has faced downward pressure, with 64% of voters reporting increased spending on basic household expenses in June 2026 [5].
Democrats currently hold a lead in the generic congressional ballot, according to recent data. The generic congressional ballot and the president's job approval rating are critical indicators for House control [4]. As of August 2026, Democrats maintained a 4% to 5% lead in the generic congressional ballot, which marks a decrease from an 8% lead in May 2026 [2][3][4]. Furthermore, prediction markets and Decision Desk HQ forecasts as of August 6, 2026, assign a high implied probability to Democrats securing control of the US House [11][12][13][14][15][16][4].
Sources (16)
- 1US economic outlook July 2026 | EY - USey.com
- 2Democrats have the second-highest generic ballot lead in May of any midterm year - Ballotpedia Newsnews.ballotpedia.org
- 3Ballotpedia's Polling Index: Generic congressional voteballotpedia.org
- 4Decision Desk HQ Releases 2026 Congressional Forecast Model | DDHQdecisiondeskhq.com
- 5Trump's approval on economy falls in AP-NORC poll, showing new warning signs for president | The Associated Pressap.org
- 6When Should We Start Paying Attention to the Congressional Generic Ballot Test?cookpolitical.com
- 7Balancing, Generic Polls and Midterm Congressional...digitalcommons.dartmouth.edu
- 8Ideological Balancing, Generic Polls and Midterm Congressional Electionssites.temple.edu
- 9US Midyear Outlook: Geopolitical Shocks, the New Fed Era, and Growth | Goldman Sachsgoldmansachs.com
- 10US economic forecast | Deloitte Insightsdeloitte.com
- 11Which party will win the U.S. House?kalshi.com
- 12Republican House seats after the 2026 midterm elections? | W.E.T.worldeventtrading.com
- 132026 House of Representatives Betting Odds + Control Oddselectionodds.com
- 142026 Midterm Election Odds — Senate, House & Governor Prediction Markets | W.E.T.worldeventtrading.com
- 152026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 162026 Election Forecast | Decision Desk HQvotes.decisiondeskhq.com
7. How do the expected net seat changes from post-2020 redistricting in Republican-controlled states like Florida and Texas compare with those from Democratic-controlled states like New York and Illinois?
| Florida Delegation Shift | Democrats lost 3 seats, Republicans gained 4 [1] |
|---|---|
| Texas House Seats Gained | 2 seats due to apportionment [2][3][4] |
| New York & Illinois House Seats Lost | 1 seat each due to 2020 Census [2][3][4] |
Republican-controlled states secured structural advantages through post-2020 redistricting efforts. Redistricting initiatives in states like Florida and Texas established structural advantages for the Republican Party, leading to varying net seat changes and partisan shifts [5][1][6]. Both Florida and Texas gained seats due to 2020 Census apportionment, with Florida adding one and Texas two [2][3][4]. Florida's delegation experienced a significant swing towards Republicans, as Democrats lost three seats and Republicans gained four [1]. Conversely, in Texas, despite gaining two U.S. House seats, the partisan composition of its congressional delegation remained unchanged after the 2022 election cycle [1].
Democratic-controlled states faced seat losses and varied partisan shifts. Conversely, Democratic-controlled states such as New York and Illinois each lost one House seat following the 2020 Census [2][3][4]. Having fewer opportunities for aggressive new gains, these states prioritized shoring up existing seats [5]. New York's delegation shifted towards Republicans, who gained three seats while Democrats lost four, subsequent to its seat loss [1][6]. In contrast, Illinois's delegation shifted towards Democrats, who gained one seat while Republicans lost two, following its own loss of a House seat [1][6].
Sources (6)
- 1Election results, 2022: Comparison of state delegations to the 117th and 118th Congresses - Ballotpediaballotpedia.org
- 2Table D1. Number of Seats Gained and Lost in U.S. House of Representatives and Table D2. Number of Seats Gained and Lost in U.S. House of Representatives by State: 2010 Censuswww2.census.gov
- 3Congressional Apportionmentwww2.census.gov
- 42020 Census Delays, Apportionment, andcongress.gov
- 5How Gerrymandering Tilts the 2024 Race for the Housebrennancenter.org
- 6Redistricting in Illinois after the 2020 census - Ballotpediaballotpedia.org
8. What do the completed 2026 primary election results and turnout data from bellwether districts indicate about relative party enthusiasm and candidate quality for Republicans versus Democrats?
| Trump-endorsed candidate win rate | 97% [1] |
|---|---|
| Republican incumbent primary loss rate | 3.3% [2][3][4] |
| Democratic incumbent primary loss rate | 1.3% [2][3][4] |
Democratic primary turnout shows a clear enthusiasm advantage this cycle. As of August 2026, primary election data indicates that Democratic voter turnout generally surpasses Republican primaries when compared to the 2022 and 2018 cycles [5][6]. Within Democratic races, progressive candidates have achieved success in safe districts, while centrist or establishment candidates have generally performed better in competitive swing districts, suggesting a strategic emphasis on electability in key battleground areas [7].
Republican primaries show strong base alignment but higher incumbent losses. Republican primary outcomes reveal distinct patterns, with 97% of Trump-endorsed candidates winning their 2026 primary races, demonstrating strong alignment between the party’s base and endorsed candidates [1]. However, state-level 2026 primary data also indicates that Republican incumbents lost to primary challengers at a higher rate of 3.3% compared to Democratic incumbents, who lost at a rate of 1.3% [2][3][4]. This occurred amidst a notably high rate of contested primaries for incumbents, marking the second-highest incidence since 2010 [2][3][4].
Sources (7)
- 197% of Trump-endorsed candidates won primaries this election cycle - Ballotpedia Newsnews.ballotpedia.org
- 2State legislative incumbents are retiring at a lower rate, facing primaries at a higher rate in 2026 - Ballotpedia Newsnews.ballotpedia.org
- 32.6% of state legislative incumbents have lost their primaries so far this year - Ballotpedia Newsnews.ballotpedia.org
- 4So far this year, fewer incumbent state legislators are retiring, but more are running in contested primary elections - Ballotpedia Newsnews.ballotpedia.org
- 5CNN analysis: Turnout in this year’s primary elections clearly favors Democrats so far | CNN Politicscnn.com
- 6Democratic turnout is up, even in Republican districts,...washingtonpost.com
- 7Progressives notch more primary victories in potential...pbs.org
9. Which 10-15 seats are considered the most critical toss-up races that will likely decide House control, according to consensus ratings from Sabato's Crystal Ball and Inside Elections?
| Sabato's Crystal Ball Toss-ups | 20 districts (July/August 2026) [1][2][3][4] |
|---|---|
| Inside Elections Toss-ups | 14 races (July/August 2026) [1][2][3][4] |
| Consensus Toss-up District | New York's 17th District (NY-17) [1][2][3][4][5][6][7] |
Key election forecasters identify numerous critical toss-up races. Consensus ratings from Sabato's Crystal Ball and Inside Elections highlight several districts considered crucial to determining control of the House. As of July and August 2026, Sabato's Crystal Ball lists 20 districts as House toss-ups, while Inside Elections identifies 14 such races [1][2][3][4]. Major election forecasters, including these two, classify a significant number of these districts as highly competitive [5][6][7].
Several districts consistently appear as toss-ups across major forecasts. Among the districts with strong consensus ratings, New York's 17th District (NY-17) is identified as a toss-up by Sabato's Crystal Ball, Inside Elections, and other major forecasters [1][2][3][4][5][6][7]. Pennsylvania's 8th District (PA-8) is also rated as a toss-up by both Sabato's Crystal Ball and Inside Elections [1][2][3][4]. Other districts major forecasters classify as toss-ups include Iowa's 1st District (IA-1), Michigan's 10th District (MI-10), North Carolina's 1st District (NC-1), Pennsylvania's 10th District (PA-10), and Florida's 25th District (FL-25) [5][6][7][3][4][1][2]. Additionally, California's 22nd Congressional District (CA-22) is rated as a Toss-up or Tilt Republican as of July 2026 [8].
Additional toss-up races emerge from individual forecaster assessments. To further detail critical toss-up races, Sabato's Crystal Ball specifically includes Florida's 14th District (FL-14) and North Carolina's 11th District (NC-11) as toss-ups [1][2]. Inside Elections identifies Arizona's 1st (AZ-1), Arizona's 6th (AZ-6), Colorado's 8th (CO-8), Michigan's 7th (MI-7), and Pennsylvania's 7th (PA-7) districts as competitive toss-up races [3][4].
Sources (8)
- 1Thirteen House Rating Changes Toward Democrats as Seat-by-Seat Assessment Better Aligns with Our November Expectations - Sabato's Crystal Ballcenterforpolitics.org
- 2Thirteen House Rating Changes Toward Democrats as Seat-by-Seat Assessment Better Aligns with Our November Expectationssabatoscrystalball.substack.com
- 3House Ratings | Inside Electionsinsideelections.com
- 4The Cook Political Report: 2026 House Race Ratingscookpolitical.com
- 52026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 62026 Election Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 7Iowa's 1st Congressional District election, 2026 - Ballotpediaballotpedia.org
- 8Election forecasters rate CA-22 Toss-up or Tilt Republican as Valadao (R) and Villegas (D) run under new district lines - Ballotpedia Newsnews.ballotpedia.org
10. What Could Change the Odds
Key Catalysts
As of August 6, 2026, the U.S. House of Representatives consists of 219 Republican seats and 212 Democratic seats, with 4 vacancies [1][2]. The threshold for a majority is 218 seats [3][4]. Prediction market consensus as of August 2026 suggests Republicans are favored to maintain control of the House, with some markets forecasting approximately 228 Republican seats against 204 Democratic seats [3][1][2]. Conversely, Decision Desk HQ's forecast model, also as of August 2026, projects Democrats are favored to win a House majority, with a 60-63% probability of gaining control and an expected 227 Democratic seats [3][5].
Key catalysts influencing prediction markets in the final months before the November 3, 2026, election include economic indicators such as inflation and interest rates [6][7][8]. Late-cycle polling, debate performances, the impact of mid-decade redistricting, and any October surprises also represent significant factors [6][7][8]. The post-election period will lead up to the convening of the 120th Congress on January 3, 2027 [9].
Key Dates & Catalysts
- Expiration: February 01, 2027
- Closes: February 01, 2027
Sources (9)
- 1Incumbent Party for Each U.S. House Seat - 270toWin270towin.com
- 22026 House Election Interactive Map270towin.com
- 32026 U.S. House Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 42026 Election Forecast | Decision Desk HQvotes.decisiondeskhq.com
- 5Decision Desk HQ Releases 2026 Congressional Forecast Model | DDHQdecisiondeskhq.com
- 62026 Midterm Election Odds: House and Senate Marketsinsidepredictions.com
- 7Inside 100 Days to the Midterms. Democrats Have a Path to the Senate. Here's the Prediction Market Math. - Prediction Authoritypredictionauthority.com
- 82026 Midterm Prediction Markets: Senate, House, and Gove… | Alphascopealphascope.app
- 9The 2026 Midterms: Key Dates and Eventsbipartisanpolicy.org
