Complex sentence: Marchant served as councilman on the Carrollton, Texas City Council from 1980 to 1984, was mayor of Carrollton from 1984 to 1986 and was a member of the Texas House of Representatives from 1987 to 2004.
Split into simpler sentences: Marchant served as councilman on the Carrollton, Texas City Council from 1980 to 1984, was mayor of Carrollton from 1984 to 1986. He was a member of the Texas House of Representatives from 1987 to 2004.