Republicans currently hold a narrow 218-seat House majority entering the November 2026 midterms, but forecasts show them defending that edge in a challenging environment. President Trump’s approval rating hovers near 38-40 percent, coinciding with a Democratic lead of roughly 5-6 points on the generic congressional ballot. Recent race ratings shifts by outlets including Inside Elections and Sabato’s Crystal Ball have moved multiple GOP-held districts toward Democrats, expanding the competitive map. Mid-decade redistricting in Republican-led states has provided some structural cushion by adding seats, yet historical midterm patterns and voter enthusiasm gaps continue to pressure the president’s party. Aggregated models project Republican totals centered around 207-211 seats, producing the market’s elevated probabilities on lower ranges amid substantial outcome variance.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · UpdatedRepublican House seats after the 2026 midterm elections?
Below 190 25%
190-194 15%
195-199 15%
200-204 14.2%
$289,783 Vol.
$289,783 Vol.
Below 190
25%
190-194
15%
195-199
15%
200-204
14%
205-209
11%
210-214
9%
215-219
5%
220-224
3%
225-229
6%
230+
3%
Below 190 25%
190-194 15%
195-199 15%
200-204 14.2%
$289,783 Vol.
$289,783 Vol.
Below 190
25%
190-194
15%
195-199
15%
200-204
14%
205-209
11%
210-214
9%
215-219
5%
220-224
3%
225-229
6%
230+
3%
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 Republican 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.
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.
Market Opened: Dec 18, 2025, 8:56 PM ET
Resolver
0x2F5e3684c...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 Republican 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.
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.
Resolver
0x2F5e3684c...Republicans currently hold a narrow 218-seat House majority entering the November 2026 midterms, but forecasts show them defending that edge in a challenging environment. President Trump’s approval rating hovers near 38-40 percent, coinciding with a Democratic lead of roughly 5-6 points on the generic congressional ballot. Recent race ratings shifts by outlets including Inside Elections and Sabato’s Crystal Ball have moved multiple GOP-held districts toward Democrats, expanding the competitive map. Mid-decade redistricting in Republican-led states has provided some structural cushion by adding seats, yet historical midterm patterns and voter enthusiasm gaps continue to pressure the president’s party. Aggregated models project Republican totals centered around 207-211 seats, producing the market’s elevated probabilities on lower ranges amid substantial outcome variance.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated



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