Recent redistricting by Ohio’s bipartisan commission produced a map slightly more favorable to Republicans than prior lines, shifting two formerly competitive districts toward the GOP and leaving Democrats defending five seats amid a national midterm environment. Greg Landsman’s 1st District moved from lean Democratic to Republican-leaning, while Marcy Kaptur’s 9th District grew more challenging; Emilia Sykes’ 13th remains the clearest battleground. Safe Democratic seats in Columbus and Cleveland anchor the floor, while Republican targeting of additional districts and historical midterm patterns for the president’s party shape the ceiling. Trader consensus around five or six Democratic wins reflects these structural constraints and the limited number of viable pickup opportunities under the new boundaries.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated6 51%
5 19%
7+ 17%
4 10%
$21,761 Vol.
$21,761 Vol.
<2
<1%
2
<1%
3
3%
4
10%
5
19%
6
51%
7+
17%
6 51%
5 19%
7+ 17%
4 10%
$21,761 Vol.
$21,761 Vol.
<2
<1%
2
<1%
3
3%
4
10%
5
19%
6
51%
7+
17%
All Ohio US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm 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: Aug 11, 2026, 10:18 AM ET
Resolver
0x69c47De9D...All Ohio US House of Representatives elections held as part of the 2026 United States midterm election that elect voting members and determine representation in the upcoming 120th congress are included. Special elections to fill a vacancy for the remainder of an unexpired term are not included, whether or not held concurrently with the 2026 United States midterm election. Runoffs for qualifying elections will determine attribution of the relevant seat.
Seats are attributed to the party under which the member was elected. If a member-elect changes party affiliation or vacates their seat after the date of the 2026 United States midterm election, the seat is attributed to the party under which the member was elected.
Members of the House elected as independents who formally caucus, or who announce their intent to caucus, with a party prior to the date of the 2026 United States midterm election are included in that party’s count. If the caucus decisions of relevant members of the US House of Representatives elected as independents cannot be determined as of the date of the 2026 United States midterm 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
0x69c47De9D...Recent redistricting by Ohio’s bipartisan commission produced a map slightly more favorable to Republicans than prior lines, shifting two formerly competitive districts toward the GOP and leaving Democrats defending five seats amid a national midterm environment. Greg Landsman’s 1st District moved from lean Democratic to Republican-leaning, while Marcy Kaptur’s 9th District grew more challenging; Emilia Sykes’ 13th remains the clearest battleground. Safe Democratic seats in Columbus and Cleveland anchor the floor, while Republican targeting of additional districts and historical midterm patterns for the president’s party shape the ceiling. Trader consensus around five or six Democratic wins reflects these structural constraints and the limited number of viable pickup opportunities under the new boundaries.
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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