Brown was elected to the Hanahan city council in 1981 and was later elected to the South Carolina House of Representatives in 1985 as a Republican from Berkeley County. Incumbent Francis Archibald resigned the seat and Brown won handily over opponent Ed Sessions in a June 1985 special election. When the Republicans gained control of the state house in 1994, Brown became chairman of the Ways and Means committee and helped deliver the largest tax cut in state history. He also served as chairman of the state's Joint Tax study Committee and was one of the vocal leaders of a massive 1998 tax proposal.