Complex sentence: Disillusioned with the Liberal Party, Wingfield joined the National Front in 1976 and rose quickly through the ranks, winning election to the National Directorate in 1980 and became editor of the "National Front News" for a time, beginning in 1983.
Split into simpler sentences: Disillusioned with the Liberal Party, Wingfield joined the National Front in 1976 and rose quickly through the ranks, winning election to the National Directorate in 1980. He became editor of the "National Front News" for a time, beginning in 1983.