It is compulsory to vote: Yes!
Do you have to fill out the ballot paper? Well here is the grey area. Have your named crossed off - still not enough to get you out of trouble...
When you are handed a ballot paper you are meant to be observed walking to the booth and then they have to presume you are filling out the ballot paper.
Now if you walked to the box to submit your ballot paper and they noticed no markings on it or a big picture of Howards tackle then you can be prosocuted for either not voting or defacing a Federal Govt paper for the use of voting under the Australian Electrol Commission Act. It's not enough to have your named crossed off on the day you have to be dillligent by making sure you paper is folded before it goes in the box.
This is all from the AEC commissioner whom I had a chat with recently.
I have a beef with them at the moment and have been removed from the roll - much to my dismay! So be careful people on the 24th!
Any man, in the right situation, is capable of murder. But not any man is capable of being a good camper. So, murder and camping are not as similar as you might think.