Will Republicans hold 47–49 Senate seats and 193–207 House seats after the 2026 midterms?
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Low gotcha risk
Gotcha risk — resolution-rule assessment
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The rules clearly define how both Senate and House seats will be counted across the target ranges, including specific definitions for regular elections, special elections, and runoffs. Resolution relies on official state election authorities, congressional records, and consensus reporting. Detailed fallback clauses specify how vacancies, party switches occurring after election day, and independent caucus affiliations are handled, including a deadline of January 4 following the election for unannounced caucus intentions. Potential runoffs or late-breaking caucus decisions may delay resolution until January, but the explicit criteria leave minimal room for subjective dispute.
- Wording ambiguity
- Low
- Source discretion
- Low
- Timing risk
- Med
- Exceptional clauses
- Med
Liquidity
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Resolution rules
The 2026 midterm elections are scheduled to be held on November 3, 2026. This market will resolve according to the combined outcome of the Republican Party’s seat count in the US House of Representatives and the US Senate as a result of the 2026 midterm elections. The Senate seat count includes all regular and special Senate elections that determine representation in the upcoming 120th Congress and are scheduled to take place in November 2026 as of October 31, 2026. Vacant Senate seats for which no election or special election to fill the seat is scheduled to take place in November 2026 as of October 31, 2026 will be treated as held by the party affiliation of the most recent member to hold that seat. The House 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 Senate or House seat is decided by a runoff, the runoff result will determine attribution of that seat, even if it takes place after November 2026. For seats contested in the specified election, 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. For seats not contested in the specified election, seats are attributed to the party that holds the seat as of the date of the election. If a current sitting member of the U.S. Senate who is not up for election changes party affiliation or vacates their seat after the date of the election, the seat is attributed to the party under which the member was affiliated at the time of the election. Senate and 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 Senate or 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.
Rules history
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Market explained
This market measures whether the Republican Party will secure both 47–49 Senate seats and 193–207 House seats following the 2026 midterm elections for the 120th Congress.
How it resolves
The market resolves Yes if the Republican Party holds between 47 and 49 Senate seats inclusive and between 193 and 207 House seats inclusive resulting from the 2026 midterms. Contested seats are attributed to the party under which members were elected, regardless of post-election party changes or vacancies. Uncontested Senate seats are attributed to the party holding them on election day. Independents count toward a party if they formally caucus or announce intent to caucus with it; otherwise, if undetermined by January 4, 11:59 PM ET of the following year, they count for no party. Runoffs decide seat attribution even if held after November 2026. The market resolves No if the final Republican seat counts fall outside either specified range. Resolution is determined by official information from state electoral authorities, the U.S. Congress, and a consensus of credible reporting.
Key dates
- Midterm Election Day: — Date of the 2026 midterm elections.
- Independent Caucus Decision Deadline: — Deadline for independent members to announce caucus intentions before being excluded from party counts.
Resolution source
Official information from relevant state electoral authorities, the United States Congress, and a consensus of credible reporting
AI-generated analysis · google/gemini-3.7-flash ·
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