 Complete the following phrase:  In February 1917 he won ALP pre-selection for a by-election in the seat of Sturt. The by-election had been caused by the resignation of the previous member John Cann who had accepted the position of Railways Commissioner. Brookfield won the seat with 54 of the primary vote and increased this to 57 at the general election that was held one month later. In parliament he became a leading left-wing advocate and expressed sympathy for the Industrial Workers of the World and the 