Public opinion and policy responsiveness: the case of same-sex marriage in Australia

This article examines congruence between public opinion and politicians’ positions on same-sex marriage in the Australian House of Representatives from 2012 to 2016. In contrast median voter theorem and other office-motivated frameworks, Australian federal politicians have largely ignored majority opinion, which has been supportive of same-sex marriage for a decade. Using a unique dataset (n = 601,550) of voter preferences collected during the 2013 federal election, and collated Hansard and media data, we compare public opinion on same-sex marriage with politicians’ public positions. We find a status quo bias, suggesting the influence of special interest groups in this policy area. Yet, we also find parliamentarians are responsive to public opinion once it reaches a critical level, and that very low opposition to same-sex marriage in an electorate predicts policy support from its MP, which varies by party and over time.