The 2019 Australian Federal Election has been called for Saturday 18th May 2019.
You must register to vote by Thursday 8pm Australian eastern standard time. Tell friends to make sure they get their vote by checking your enrolment with AEC: https://check.aec.gov.au/
Enroling to vote while outside of Australia if not registered: https://www.aec.gov.au/Enrolling_to_vote/pdf/forms/overseas/er016osw.pdf
If already enrolled, and you want a postal vote rather than at the embassy, submit an Overseas Notification Form and request a postal vote: https://www.aec.gov.au/Enrolling_to_vote/pdf/forms/overseas/overseas-notification-form.pdf