Candidate competition and strategic coordination: evidence from four early Norwegian elections

This article investigates strategic coordination in four elections to the Norwegian Storting (1909–18). The elections were held under a majority-plurality dual-ballot system, with unrestricted participation in the second-ballot. The focus is on elections with Conservative, Liberal and Labour candidates as main contenders. Supported by historical and theoretical arguments, the authors assume universally sincere voting in the first-ballot. Given this assumption, second-ballot elections can be analyzed as regular plurality elections. Hypotheses about behavior are formed using the game theoretic framework of Myerson and Weber (American Political Science Review 87 (1993) 102–114). It is found that while voters follow the predictions of theory fairly closely, the extent of coordination present at the candidate level can be questioned.