You commit the offence of personation if you vote in someone else's name at an election or poll. You also commit this offence if you vote again after already voting at the same election or poll. If you try to return another voting document after already doing so, with the intention of casting an extra valid vote or cancelling a vote you already made, you commit this offence. If you are found guilty of personation, you could be imprisoned for up to 2 years. This is a serious offence that can have significant consequences. You should be aware of the rules around voting to avoid accidentally committing this offence. You can find more information about the laws related to personation in the Local Electoral Act 2001 and the Criminal Procedure Act 2011. These laws are in place to ensure the integrity of the electoral process. They help to prevent people from cheating or manipulating the system.