The Australian Federal Government currently have a petition open, and if it gets enough signatures by October 16th it will mean that they will debate declaring a climate emergency in the lower house.
Unlike other advocacy groups, this one is by the parliament meaning they will debate it if they get the signatures.
When signing, make sure you do the last step which is verifying your email.
https://www.aph.gov.au/petition_sign?id=EN1041 Declare a Climate Emergency Petition Reason The overwhelming majority of climate scientists around the world have concluded that the climate is changing at unprecedented rates due to anthropogenic causes. The result of these changes will be catastrophic for future generations, and so we must act now to minimise both human and environmental destruction. Petition Request We therefore ask the House to immediately act and declare a climate emergency in Australia. And introduce legislation that will with immediacy and haste reduce the causes of anthropogenic climate change.