Australia’s political system ‘rewards centrism. All eligible citizens must vote, by law, and those who might not bother to turn out otherwise tend to plump for mainstream parties. There is no need to rally supporters to the polls by pandering to their prejudices. Since everyone has to show up, politicians focus instead on winning over the wavering middle. The system of preferential voting, whereby Australians rank candidates in order of choice, rather than picking just one, also exerts a moderating influence,’ (‘Aussie rules’, The Economist 27th October 2018, p.11).