A Democratic judge has announced his candidacy for a seat on the Ohio Supreme Court. Michael Donnelly currently serves on the Cuyahoga County Court of Common Pleas in Cleveland. He said Thursday he's running for the high court this year.

There are two November races for seats on the seven-person court. One is for an open seat being vacated by the retirement of Republican Justice Terrence O'Donnell. The second is for a seat being vacated this month by Democratic Justice William O'Neill, who is running for governor.

Gov. John Kasich is expected to appoint a fellow Republican to fill O'Neill's seat, and that person will then choose whether to run for the full six-year term