Incumbent Democrat Greg Landsman holds an 88% implied probability in the Ohio 1st District House race, reflecting his established position after two terms, superior fundraising of over $4.6 million compared to challenger Eric Conroy’s $1.5 million, and polling leads such as a 3.3-point advantage in the most recent survey. The district’s October 2025 redistricting added Republican-leaning areas, shifting its baseline toward a narrow GOP tilt in presidential voting, yet forecasters rate the contest Lean Democratic due to Landsman’s incumbency and local support. Conroy, a former CIA case officer and Air Force veteran who won the Republican primary, has gained visibility through national security messaging and endorsements, but trails in cash on hand and voter recognition. Early voting began in early October ahead of the November 3 general election, with no major late developments reported that have altered the trader consensus favoring the incumbent.