In 1974, O'Shaughnessy overcame a divisive primary and a challenge by Republican Keith McNamara to retain the seat.

[3] He subsequently was appointed as Chairman of the Senate Energy Committee.

In 1978, O'Shaughnessy faced opposition in John Kasich, a political newcomer.

He is the father of the Maryellen O'Shaughnessy, Franklin County Clerk of Courts.

This article about a member of the Ohio State Senate is a stub.