The smaller is for the House of Representatives, which is elected using preferential voting. You must number every box in order of your preference for your vote to be valid. The larger is for the Senate, which consists of 76 members, 12 for each state, and two for each territory. On the Senate ballot paper, you can vote in one of two ways. First, you can number at least six boxes above the line, indicating the parties or groups you prefer in the order of your choice. Or you can vote below the line, meaning you are voting individually for the candidates nominated by each party or group. In this case you must number at least 12 boxes to cast a valid vote.
