Incumbent Democrat Greg Landsman holds an 88.4% implied probability in the OH-01 House race due to his established position in a district rated Lean or Likely Democratic by forecasters despite 2025 redistricting that strengthened Republican positioning. Landsman leads recent polling averages by roughly 6 points and maintains a substantial fundraising edge with more than $4.6 million raised compared to Republican challenger Eric Conroy’s $1.5 million. Conroy, an Air Force veteran and former CIA officer who won his May primary, has secured endorsements from groups like the NFIB and national Republican figures, yet trails in cash on hand. Early voting began October 6 ahead of the November 3 general election, with candidates dividing over tax policy and education funding. The current trader consensus reflects these structural and resource advantages for the incumbent.