Direct democracy and party behaviour in the Republic of Ireland: a campaign finance perspective

Studies on the Irish referendum experience have generally accepted that political parties play a fundamental role in the direct democratic process. While this is rarely problematised, parties often campaign in referendums in order to steer them towards outcomes that are strategically beneficial. Contemporary research on Irish referendums has delved into how parties shape their campaigns to achieve these goals, but a more preliminary question is still to be addressed: to what extent do parties participate in referendum campaigns? This paper attempts to do so by examining campaign expenditure, which offers a concrete quantitative indicator for party engagement vis-à-vis referendums. Departing from theory on party behaviour and referendum instrumentalization, the article takes into account Irish regulations on campaign finance before offering a descriptive and explorative comparison of the expenditure of Irish political parties in recent referendum campaigns. Several patterns within the data are then discussed in light of potential influential factors identified in previous scholarly work. Results suggest that a referendum's topic and its salience in the public sphere, as well as a party's financial resources and government status, could explain party behaviour in Irish referendum campaigns, and a set of congruent hypotheses for future research are formulated in the conclusion.