Adam Clay Miller
Ran for Ohio 15th Congressional District · Democrat
Lost the 2026 primary
Ballot status source: Lost the 2026 Democratic primary on May 5, 2026 — Ohio Secretary of State — Summary Level Official Results, May 5, 2026 Primary Election: Representative to Congress - District 15 — Democratic primary… · read May 5, 2026
Sources (2)
- Lost the 2026 Democratic primary on May 5, 2026 — Ohio Secretary of State — Summary Level Official Results, May 5, 2026 Primary Election: Representative to Congress - District 15 — Democratic primary — 'Adam C. Miller' 21,179
- nominee 'Don Leonard' 23,798
The District
What Ohio 15th Congressional District covers
Covers all of Highland County, Pickaway County, Madison County and Fayette County; parts of Franklin County, Miami County and Clark County.
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
Certified results for Ohio 15th Congressional District
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)
The 2026 Field
Who else is running for Ohio 15th Congressional District
- Mike CareyRepublican · Incumbent · On the 2026 ballot
- Brennan BarringtonLibertarian · On the 2026 ballot
- Don Ralph LeonardDemocrat · On the 2026 ballot
- Gary JosephsonIndependent · Write-in candidate
- Samuel RonanRepublican · Write-in candidate
Not on file for Adam yet: Key Votes, Their Money, Advertising, In Their Words, In the News, Reach Them, Polls, The Paper Trail. Coverage varies by state and office.
File read Sep 25, 2026. Each item names its source. Record ID p_h5pxnjx55.
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