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U.S. House · All Ohio races

Ohio District 1

Solid D
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Greg Landsman
Democratic · incumbent
99 in 100
50–50chance of winning, out of 100
Eric Conroy
Republican
1 in 100

Greg Landsman wins in 99 of 100 simulations.

The polling average has Greg Landsman +6.2 across 1 poll; partisan lean, the national environment and incumbency point to Greg Landsman +12.3. Polls get 52% of the weight 15 days out.

Where the result could land

Every simulated outcome, grouped in 2-point steps. Projected margin Landsman +9.1; 80 in 100 fall between Landsman +4.2 and Landsman +14.1.

Conroy +30Conroy +20Conroy +10Landsman +10Landsman +20Landsman +30Tie

The candidates

Eric Conroy
Republican
Raised
$2.2M
Cash on hand
$333K
Through 2026-09-30
No biography on file yet.
Greg LandsmanIncumbent
Democratic · American politician (born 1976)

Gregory John Landsman is an American politician who has been the U.S. representative from Ohio's 1st congressional district since 2023. The district is based in Cincinnati, and includes most of its inner suburbs. Wikipedia

Raised
$5.5M
Cash on hand
$1.5M
Through 2026-09-30
Official website ↗
Nathan Weise
Libertarian

Ballot list and short bios from Wikipedia (CC BY-SA); websites from Wikidata; fundraising from the FEC (cycle-to-date, latest report).

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Polls

The polling average stands at Landsman +6.2 across 1 poll testing Greg Landsman against Eric Conroy.

Landsman +1.9 since Aug 24, 2026
Conroy +20Conroy +10EvenLandsman +10Landsman +20Aug 30Sep 6Sep 13Sep 20Sep 27Oct 4Oct 11Oct 18

Line: weighted average after adjustments; band: 95% range of the average; dots: individual polls after adjustments.

PollsterDatesSampleResultAdjustedWeight
Quantus InsightsAug 21–Aug 24509 LVLandsman +3.3Landsman +6.20.37

Chance of winning over time

How this race’s odds have moved as polls and the national environment changed.

Landsman +3 over the past 3 months
020406080100Aug 1Sep 1Oct 1

Out of 100. Today: Landsman 99, Conroy 1.

What’s driving the forecast

The model blends each estimate by how much to trust it right now. Polls get 52% of the weight, 15 days out.

Polling average (after adjustments)Landsman +6.2±7.8 sampling range; effective 1 polls
Partisan lean (Cook PVI, 2026 lines) R+1.0roughly 2 points of margin vs. the nation
National environment D+9.6generic ballot + presidential approval
IncumbencyLandsman +3.6incumbent’s side
Fundamentals estimateLandsman +12.3±6 typical error
Expert ratings (average)—used only in the “+ Expert ratings” version
ForecastLandsman +9.1±4.0 standard deviation, including 2.3 for movement before Election Day

All three versions

  • Polls only: Greg Landsman 88 in 100 (Likely D)
  • Polls + fundamentals: Greg Landsman 99 in 100 (Solid D)
  • Polls + fundamentals + experts: Greg Landsman 99 in 100 (Solid D)

Rules and notes

  • Incumbent renominated

House races, closest first · this is #97 of 421