**Ohio’s 15 congressional districts feature a new map adopted unanimously by the state redistricting commission in late 2025, which modestly strengthens Republican positioning overall while preserving three Democratic-held seats as the primary battlegrounds.** Democrats currently hold five seats (OH-1, OH-3, OH-9, OH-11, and OH-13), and forecasters rate the solid Democratic districts (OH-3, OH-11, and OH-13) as likely or safe holds for incumbents Joyce Beatty, Shontel Brown, and Emilia Sykes. The most competitive contests center on Greg Landsman in OH-1 and Marcy Kaptur in OH-9, both shifted more Republican by the map changes, alongside a handful of Republican-held seats such as OH-7 (Max Miller) that have moved into toss-up territory amid personal allegations against the incumbent. Trader pricing around five or six Democratic seats reflects expectations that Democrats will defend their existing holdings while facing structural barriers to net gains, with outcomes sensitive to turnout in suburban and urban corridors, generic ballot trends, and any coattails from concurrent statewide races. Resolution occurs after the November 3, 2026, general election based on certified results.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated6 48%
5 24%
7+ 18%
4 11%
$16,470 Vol.
$16,470 Vol.
<2
<1%
2
<1%
3
4%
4
11%
5
24%
6
48%
7+
18%
6 48%
5 24%
7+ 18%
4 11%
$16,470 Vol.
$16,470 Vol.
<2
<1%
2
<1%
3
4%
4
11%
5
24%
6
48%
7+
18%
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...**Ohio’s 15 congressional districts feature a new map adopted unanimously by the state redistricting commission in late 2025, which modestly strengthens Republican positioning overall while preserving three Democratic-held seats as the primary battlegrounds.** Democrats currently hold five seats (OH-1, OH-3, OH-9, OH-11, and OH-13), and forecasters rate the solid Democratic districts (OH-3, OH-11, and OH-13) as likely or safe holds for incumbents Joyce Beatty, Shontel Brown, and Emilia Sykes. The most competitive contests center on Greg Landsman in OH-1 and Marcy Kaptur in OH-9, both shifted more Republican by the map changes, alongside a handful of Republican-held seats such as OH-7 (Max Miller) that have moved into toss-up territory amid personal allegations against the incumbent. Trader pricing around five or six Democratic seats reflects expectations that Democrats will defend their existing holdings while facing structural barriers to net gains, with outcomes sensitive to turnout in suburban and urban corridors, generic ballot trends, and any coattails from concurrent statewide races. Resolution occurs after the November 3, 2026, general election based on certified results.
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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