One Nation’s spectacular rise from a distant 6% of the vote in the last election to first or second in some recent polls has upended Australian politics. It has also made it a lot harder to predict what exactly will happen at the next election.
Traditionally, pollsters and election experts would look at how preferences flowed in previous elections when estimating two-party preferred numbers, or translating polling into seat projections. This was fairly predictable when almost every seat would come down to a contest between Labor and the Coalition.