Preferential voting is Australia is actually really cool. It lets you list the candidates on your ballot in the order of your preference.
So you can, for example, have The Pirate Party as number 1, The Greens as number 2, Labor as second last, and LNP as last, with any other candidates in between.
You are in control of who your vote goes to. The candidates and parties have no say in it at all. Don’t let the media tell you otherwise.