Ohio's 1st Congressional District (OH-1)

Last updated Oct 1, 2026 · 6 sources

Greg Landsman, a Democrat, has represented the district since 2023.

The district includes all of Warren County and part of Hamilton County.

According to the Census Bureau's 2020–2024 American Community Survey 5-year estimates, the district has a population of 794,614, a median household income of $80,294, and a median age of 37. Of residents 25 and older, 46.4% hold a bachelor's degree or higher.

Representative

Greg Landsman

U.S. Representative for Ohio's 1st District · Democrat

Profile Schedule this week

2026 redistricting

Ohio uses a new congressional map in 2026: Ohio Redistricting Commission plan, adopted by the state's redistricting commission Oct 31, 2025.

The 2026 election for OH-1 uses the new map's OH-1; the map on this page shows the district as currently drawn (119th Congress).

Source · All 2026 redistricting changes

2026 election

Landsman has filed with the FEC to run for this seat in 2026. 7 candidates for the seat have reported receipts to the FEC.

7 candidates have reported raising money for the 2026 OH-1 race to the FEC.

Election Day: Tuesday, November 3, 2026

Candidates for OH-1 in 2026 who reported raising money to the FEC
Candidate	Party	Raised	Cash on hand	Through
Greg Landsman (incumbent)	Democratic	$4,633,250	$3,610,214	Jun 30
Eric Conroy	Republican	$1,513,614	$474,156	Jun 30
Steven Erbeck	Republican	$834,934	$0	Sep 30
Holly Adams	Republican	$412,794	$0	Jun 22
Rosemary Oglesby-Henry	Republican	$44,090	$186	Apr 15
Damon Lynch IV	Democratic	$13,630	$4,221	Apr 22
John David Hancock Jr.	Libertarian	$1,316	$1,316	Mar 31