Incumbent Democrat Greg Landsman holds a commanding position in the November 3, 2026, contest for Ohio’s 1st congressional district, with traders assigning him an 88.8% implied probability of victory over Republican Eric Conroy. Landsman secured his party’s nomination comfortably in the May primary and benefits from substantial fundraising dominance and higher cash reserves heading into the general election. The district underwent mid-decade redistricting that shifted it modestly toward Republicans, yet most nonpartisan ratings continue to classify the seat as Lean or Tilt Democratic. Conroy, an Air Force veteran and former CIA officer endorsed by Donald Trump, won his primary decisively but trails in available polling from August. The market pricing reflects the structural advantages of incumbency and campaign resources in a still-competitive battleground.
Experimental AI-generated summary referencing Polymarket data. This is not trading advice and plays no role in how this market resolves. · Updated$34,543 Vol.
$34,543 Vol.
Greg Landsman (D)
89%
Eric Conroy (R)
10%
$34,543 Vol.
$34,543 Vol.
Greg Landsman (D)
89%
Eric Conroy (R)
10%
A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Market Opened: Dec 16, 2025, 12:48 PM ET
Resolver
0x2f5e3684c...A candidate's party will be determined by their ballot-listed or otherwise identifiable affiliation with that party at the time all of the 2026 House elections are conclusively called by this market's resolution sources. A candidate without a ballot-listed affiliation to either the Democrat or Republican parties will be considered a member of one of these parties based on the party with which they most recently expressed their intent to caucus at the time all of the House elections are conclusively called by this market's resolution sources.
This market will resolve based on the result of the election as indicated by a consensus of credible reporting. If there is ambiguity, this market will resolve based solely on the official results as reported by the United States government, specifically the Federal Election Commission (https://www.fec.gov/).
Resolver
0x2f5e3684c...Incumbent Democrat Greg Landsman holds a commanding position in the November 3, 2026, contest for Ohio’s 1st congressional district, with traders assigning him an 88.8% implied probability of victory over Republican Eric Conroy. Landsman secured his party’s nomination comfortably in the May primary and benefits from substantial fundraising dominance and higher cash reserves heading into the general election. The district underwent mid-decade redistricting that shifted it modestly toward Republicans, yet most nonpartisan ratings continue to classify the seat as Lean or Tilt Democratic. Conroy, an Air Force veteran and former CIA officer endorsed by Donald Trump, won his primary decisively but trails in available polling from August. The market pricing reflects the structural advantages of incumbency and campaign resources in a still-competitive battleground.
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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