During his time in the legislature, Stevenson served on the House Appropriations, Judiciary and Professional Licensure Committees.

In 1996, Stevenson joined the Mercer County Board of Commissioners and was elected chairman.

That year, he defeated the Armstrong County district attorney, George Kepple, in the Republican primary election[3] with 55% of the vote.

He served as Korean Language Specialist with the Air Force Security Service.

Stevenson received a Bachelor of Arts degree from St. Francis College in New York and a Master of Business Administration from Suffolk University in Massachusetts.