(Main article: Australian federal election, 2016)(See also: Mackerras pendulum for the Australian federal election, 2016) Several research and polling firms are conducting polls during the parliamentary term and prior to the 2016 Australian federal election set for 2 July in relation to voting intention for the Australian House of Representatives (lower house) and leader ratings. Most firms use the flow of preferences at the previous election to determine the two-party-preferred vote; others ask respondents to nominate their second preference before applying the preference flows at the previous election.