Facebook users can use a new tool to tell friends they have voted tomorrow -- but the Electoral Commission is warning users about making online comments that could influence voters on election day.
Facebook's megaphone button has been used in elections around the world and acts as a virtual sticker to encourage other people to vote.
Electoral Commission guidelines state people can declare they have voted and encourage others to do so on social media.
However, any attempts to influence voters or discuss candidates and parties is in breach of the Electoral Act.