Complex sentence: An earlier district called Charters Towers based in the same region existed from 1888 to 1960--firstly as a dual member electorate, and from 1912 as a single member electorate.
Split into simpler sentences: An earlier district called Charters Towers based in the same region existed from 1888 to 1960. Firstly as a dual member electorate, and from 1912 as a single member electorate.