At the time, the voting system in Queensland was based on contingency voting, which was similar to the modern optional preferential voting system. In electorates with 3 or more candidates, preferences were not distributed if a candidate received more than 50% of the primary vote.
If none received more than 50%, all except the top two candidates were eliminated from the count and their preferences distributed between the two leaders, with the one receiving the most votes declared the winner.
This by-election was caused by the resignation of Randolph Bedford who attempted to enter Federal politics. He was unsuccessful in his attempt to win the seat of Maranoa, but succeeded in retaining his old seat in the State Assembly afterward.
^Hughes, Colin A. (1974). Voting for the Queensland legislative assembly, 1890-1964. Canberra: Dept. of Political Science, Research School of Social Sciences, Australian National University. ISBN0-7081-0301-4.
^Hughes, Colin A. (1974). Voting for the Queensland legislative assembly, 1890-1964. Canberra: Dept. of Political Science, Research School of Social Sciences, Australian National University. ISBN0-7081-0301-4.