For those who want to go prepared

senate.io — Australian senate below the line ballot paper tool

This looks like a handy tool.  Instead of pondering for 20 minutes in the local school hall (if it's a nice one, it was probably built by Labor, by the way) whether to put the Legalise Marijuana Party above or below the Climate Idiots Party, you can work it all out at home and print out your personal "how to vote under the line" card.

Neat.