Labor and Greens unlikely to win a Senate majority on current polling; Greens jump in Essential poll
- Written by Adrian Beaumont, Honorary Associate, School of Mathematics and Statistics, University of Melbourne

There are 76 senators – 12 in each state and two in each territory. At a normal half-Senate election, half the state senators and all territory senators are elected, so 40 of the 76 senators are up for election on May 18. As tied votes are lost, it takes...