In this report series, we present and analyse the results of Senate voting intention polls to project the potential makeup of the Senate following one or more elections.

On current polling, future elections are likely to return a crossbench that is about as large and divided as the current one. Future governments – whether Coalition or Labor – should prepare for a number of possible crossbenches: one where Greens votes are necessary to pass legislation, one where micro-parties and independents are necessary to pass legislation, and one where Greens, micro-parties and independents are all necessary to pass legislation.