While the main focus of the election campaign has been on the House of Representatives, the makeup of the new Senate will be crucial to the success of the next government. If Labor forms government it will be hoping for a more sympathetic Senate than the current numbers, which lean to the right.
The Coalition and One Nation until recently held half the 76 Senate seats between them. Three seats are held by Jacqui Lambie, Rex Patrick and Stirling Griff, with the remaining 35 held by Labor or the Greens.