At a referendum, you will receive a ballot paper with the proposed alteration to the Constitution on it, followed by a question asking if you approve the proposed alteration. On the referendum ballot paper you need to indicate your vote by clearly writing:
You can use this sample ballot paper to practise voting in a Referendum. Submit the answer that you have written in the box to see if your answer will result in a formal vote.Practise voting - Senate
While this tool does not recognise symbols, it is best to follow the instructions on the ballot paper and write a ‘yes’ or ‘no’ vote. Don’t leave your vote up to chance or to be potentially questioned. Make your vote count.