523 precincts · District lines: Congressional lines: enacted plan "Congressional Redistricting Plan Adopted by the Ohio Redistricting Commission" (Ohio Const. Art. XIX; adopted unanimously by the Ohio Redistricting Commission Oct 31, 2025; Secretary of State Directive 2025-55); 2026 status: In effect for 2026 through 2032 (commission plan adopted with bipartisan support; no pending challenge). Official file https://maps.ohio.gov/arcgis/rest/services/Hosted//FeatureServer/0 · Precinct lines: Franklin County Board of Elections voting precincts (file dated 2025-10-07) added for the 2024 general

Results in This District

Contest	First	Second	Margin	Votes	Source
2024 President542 precinctsOhio Secretary of StateOfficial canvass	Donald J. Trump and JD Vance (R)198,022 · 53.5%	Kamala D. Harris and Tim Walz (D)168,787 · 45.6%	R+7.9	370,451	Ohio Secretary of StateOfficial canvass
2024 U.S. Senate542 precinctsOhio Secretary of StateOfficial canvass	Bernie Moreno (R)177,192 · 48.5%	Sherrod Brown (D)175,968 · 48.2%	R+0.3	365,377	Ohio Secretary of StateOfficial canvass
2022 U.S. Senate505 precinctsOhio Secretary of StateOfficial canvass	JD Vance (R)127,517 · 53.5%	Tim Ryan (D)110,772 · 46.5%	R+7.0	238,289	Ohio Secretary of StateOfficial canvass
2022 Governor505 precinctsOhio Secretary of StateOfficial canvass	Mike DeWine and Jon Husted (R)148,353 · 62.3%	Nan Whaley and Cheryl L. Stephens (D)89,720 · 37.7%	R+24.6	238,073	Ohio Secretary of StateOfficial canvass
2020 President523 precinctsOhio Secretary of StateOfficial canvass	Donald J. Trump and Michael R. Pence (R)195,538 · 53.0%	Joseph R. Biden and Kamala D. Harris (D)167,792 · 45.5%	R+7.5	369,157	Ohio Secretary of StateOfficial canvass

Totals add up the certified precinct results for the precincts inside today's district lines. A precinct split by the district line counts in full, or only in the district holding most of its voters where the linkage assigns it to one, and votes a county reported only countywide (some counties' absentee and early votes) are left out, so totals can differ from an official canvass.

Past Results

U.S. House, District 15 — Democratic primary

Ohio Primary Election May 5, 2026 (county board official canvasses) · May 5, 2026

Candidate	Party	Votes	Share
Don LeonardDemocratic	Democratic	20,330	54.7%
Adam C. MillerDemocratic	Democratic	16,836	45.3%

Official — county boards of elections' official canvasses · Ohio county boards of elections — official precinct canvasses

Sources (1)

Official — county boards of elections' official canvasses (Franklin certified 2026-05-21; Clermont certified 2026-05-20). Ohio SOS statewide canvass files not retrieved: ohiosos.gov returned Http 403 'Website Maintenance' 2026-09-25 (portal unavailable — not searched)

U.S. House, District 15 — Libertarian primary

Ohio Primary Election May 5, 2026 (county board official canvasses) · May 5, 2026

Candidate	Party	Votes	Share
Brennan BarringtonLibertarian	Libertarian	317	100.0%

Official — county boards of elections' official canvasses · Ohio county boards of elections — official precinct canvasses

Sources (1)

Official — county boards of elections' official canvasses (Franklin certified 2026-05-21; Clermont certified 2026-05-20). Ohio SOS statewide canvass files not retrieved: ohiosos.gov returned Http 403 'Website Maintenance' 2026-09-25 (portal unavailable — not searched)

U.S. House, District 15 — Republican primary

Ohio Primary Election May 5, 2026 (county board official canvasses) · May 5, 2026

Candidate	Party	Votes	Share
Mike CareyRepublican	Republican	19,414	88.7%
Samuel Ronan - InvalidRepublican	Republican	2,481	11.3%

Official — county boards of elections' official canvasses · Ohio county boards of elections — official precinct canvasses

Sources (1)

Official — county boards of elections' official canvasses (Franklin certified 2026-05-21; Clermont certified 2026-05-20). Ohio SOS statewide canvass files not retrieved: ohiosos.gov returned Http 403 'Website Maintenance' 2026-09-25 (portal unavailable — not searched)

Representative to Congress - District 15

Ohio General Election 2024-11-05 · Nov 5, 2024

Candidate	Party	Votes	Share
Mike CareyRepublican	Republican	196,338	56.5%
Adam MillerDemocrat	Democrat	151,411	43.5%

Official canvass — Ohio Secretary of State · Ohio Secretary of State — Official Election Results

Sources (2)

Official canvass — Ohio Secretary of State (statewide races by precinct). File retrieved from Internet Archive capture 20251216225505 of the SOS URL because ohiosos.gov blocks automated downloads
write-in candidates have no precinct detail in the SOS file

Representative to Congress - District 15

Ohio General Election 2022-11-08 · Nov 8, 2022

Candidate	Party	Votes	Share
Mike CareyRepublican	Republican	143,112	57.0%
Gary JosephsonDemocrat	Democrat	108,139	43.0%

Official canvass — Ohio Secretary of State · Ohio Secretary of State — Official Election Results

Sources (2)

Official canvass — Ohio Secretary of State (statewide races by precinct). File retrieved from Internet Archive capture 20251204011955 of the SOS URL because ohiosos.gov blocks automated downloads
write-in candidates have no precinct detail in the SOS file

Representative to Congress - District 15

Ohio General Election 2020-11-03 · Nov 3, 2020

Candidate	Party	Votes	Share
Steve StiversRepublican	Republican	243,103	63.4%
Joel NewbyDemocrat	Democrat	140,183	36.6%

Official canvass — Ohio Secretary of State · Ohio Secretary of State — Official Election Results

Sources (2)

Official canvass — Ohio Secretary of State (statewide races by precinct). File retrieved from Internet Archive capture 20250916084702 of the SOS URL because ohiosos.gov blocks automated downloads
write-in candidates have no precinct detail in the SOS file