Portal:Australia/Anniversaries/September/September 5
- 1984 – Western Australia becomes the last Australian state to abolish capital punishment for ordinary crimes (i.e., murder). New South Wales maintained it as a punishment for treason and piracy with violence until 1985.
- 1985 – John Howard replaces Andrew Peacock as federal Liberal leader and thus federal Leader of the Opposition.
- 1994 – Politician John Newman is murdered outside his Cabramatta home.