Data shows the rightwing party faces an obstacle in the form of urban seats – and the effect of preference flows is harder to predict Get our breaking news email, free app or daily news podcast 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…