Requirement to issue reasoned decision

Electoral Act 1968, 121(f)

Trial of election petitions

at the conclusion of the trial of any election petition, the High Court shall determine whether the respondent was duly elected or whether any, and if so what, person other than the respondent was or is entitled to be declared duly elected;

http://aceproject.org/regions-en/eisa/BW/Electoral%20Act%201968.pdf