Colleen O'Donnell

Republican nominee challenging Democratic incumbent Jennifer Brunner for her seat on the Ohio Supreme Court in the Ohio 2026 Supreme Court Election.

Key facts

• Former Franklin County Common Pleas Court judge.
• Won a four-way May 2026 Republican primary with 32.2% (232,689), over Andrew King (29.8%), Jill Flagg Lanzinger (19.9%), and Ronald Lewis (18.1%).

Relationships

• Opponent of Jennifer Brunner — the seat that decides whether the court stays 6–1 Republican.
• Part of the Ohio 2026 Elections judicial slate.

Sources

• Ohio Supreme Court elections, 2026 — Ballotpedia (retrieved 2026-07-03)