I previously wrote about the Senate the morning after the election. About half the Senate is elected at each House of Representatives election. Those up for election include six senators out of 12 for every state and all four territory senators. So 40 of the 76 senators were up for election.
State senators elected at this election will start their six-year terms on July 1, while territory senators are tied to the term of the lower house.
At a double dissolution election, all senators are up for election, and this truncates the terms of senators. With Labor and the Greens so dominant at this election, the Coalition may try a double dissolution if they win the next election.