The # of seats the Republican Party wins in the U.S. House of Representatives in the 2026 midterm elections
This snapshot shows a condensed version of Mantic's analysis — the full breakdown is available in the Mantic app. The live forecast may have changed.
Most likely value
199 seats
As of 16 Sept 2026, 09:32 UTC
Forecast distribution
Rationale
Full accessMy most likely prediction for the number of seats won by the Republican Party in the U.S. House of Representatives in the 2026 midterm elections is 198.82 seats because severe political headwinds from President Trump's low approval ratings, persistent inflation, and the ongoing Iran conflict will drive decisive seat losses, though favorable mid-decade redistricting cushions against a deeper collapse.
Forecast record
ScenariosFull access1
The # of seats the Republican Party wins in the U.S. House of Representatives in the 2026 midterm elections
When will the Fed next hike interest rates · On or after 1 Nov 2026
6% chance of this condition
Default: mean 200.79
Central 50%: 189.97 to 208.54. Central 80%: 181.89 to 219.17.
If yes: mean 205.17
Central 50%: 195.20 to 213.41. Central 80%: 186.62 to 222.73.
If no: mean 200.49
Central 50%: 189.69 to 208.15. Central 80%: 181.66 to 218.82.
The # of seats the Republican Party wins in the U.S. House of Representatives in the 2026 midterm elections
The # of seats the Republican Party wins in the U.S. House of Representatives in the 2026 midterm elections
Question context
President Donald Trump is facing political headwinds ahead of the November 2026 midterm elections, driven in part by the ongoing US-Iran conflict and its economic impacts. With his approval rating dropping to around 34% in recent polling, political analysts have highlighted the dimming chances of the Republican Party retaining control of Congress. The U.S. House of Representatives consists of 435 voting seats, and midterm elections historically result in seat losses for the incumbent president's party. The outcome will significantly shape the legislative environment for the remainder of Trump's second term and impact U.S. domestic and foreign policy.
Resolution criteria
This question resolves as the total number of voting seats won by candidates officially affiliated with the Republican Party in the U.S. House of Representatives during the November 2026 general elections. Resolution will be based on the official election results as compiled by the Clerk of the U.S. House of Representatives or, if those are not yet available by the scheduled resolution date, by the final race calls made by the Associated Press (AP). Seats won by independents who may caucus with Republicans are not included.
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