Incumbent Democrat Greg Landsman holds a narrow edge over Republican Eric Conroy in recent polling for the November 3, 2026, OH-01 contest, with surveys from late September and August showing leads of 2-4 points amid modest undecided shares. The Cincinnati-area district's mix of suburban and urban voters, combined with Landsman's incumbency and substantial fundraising lead, sustains a competitive environment reflected in trader pricing across multiple Democrat margin buckets from 0-3% through 12-15%. Limited polling volume and the absence of major late-cycle shifts leave room for national midterm dynamics or turnout differences to widen or narrow the final result before Election Day.