Complex sentence: It was used in the Australian Senate from 1901 to 1948 (from 1918, this was preferential bloc voting), is widely used for local elections in the UK and is often used to elect the boards of directors of corporations.
Split into simpler sentences: It was used in the Australian Senate from 1901 to 1948 (from 1918, this was preferential bloc voting). It is often used to elect the boards of directors of corporations.