Katherine Bowles of Lebanon is running for Warren County Commission as a Libertarian, in what is believed to be a first for the county.

Brian Sleeth, director of elections at the Warren County Board of Elections, told the Warren County Post that Bowles is believed to be the first Libertarian to run for any local county position in Warren County. She faces Republican Tom Grossmann and Democratic candidate Ian Logan in the Tuesday, Nov. 3 general election.

Warren County has long been one of Ohio's most reliably Republican counties, according to the Warren County Post. Bowles' candidacy as a former Republican now running under the Libertarian banner introduces a third-party option in a county commission race that has traditionally drawn only Republican and Democratic candidates. Her entry could test whether Libertarian ideas have traction in a county where the Republican Party has dominated local offices.

Bowles was unopposed in the Libertarian Party primary on May 5, according to the Warren County Post. She is certified for the general election ballot, according to BallotReady election data.

Candidate information

  • Name: Katherine Bowles
  • Party: Libertarian
  • Residence: Lebanon, Ohio
  • Office sought: Warren County Commission
  • Election date: Tuesday, Nov. 3, 2026

On the issues

Bowles has not made policy positions publicly available through a campaign website or candidate questionnaire. She did not respond to a Mason-Deerfield Times candidate questionnaire. No official campaign website could be located for this profile.

Without stated policy positions, it is not clear where Bowles stands on county budget priorities, tax levies, development or other issues that come before the commission. Voters seeking more information about Bowles can find her listed on The Ballot Brief.

Endorsements

Bowles is listed as a candidate by the Libertarian Party of Ohio.

  • Libertarian Party of Ohio

About this race

Three commissioners serve Warren County. One seat is on the ballot this cycle. Bowles joins a three-way contest with Tom Grossmann, the Republican candidate, and Ian Logan, the Democratic candidate.

The general election is Tuesday, Nov. 3.

Editor's note: This profile is part of the Mason-Deerfield Times' 2026 election coverage. Bowles did not respond to a Mason-Deerfield Times candidate questionnaire. The Mason-Deerfield Times will publish profiles of each candidate as information becomes available. This profile will be updated if additional information is received.