Explaining Dissent on the Supreme Court of Canada

TLDR: This paper found that the likelihood of dissension is strongly related to four broad factors that appear to exert independent influence on whether the Court is consensual or divided: political conflict, institutional structure, legal ambiguity in the law and variations in the leadership style of the chief justice.

Abstract: . While there is an extensive literature on the causes of dissensus on appellate courts in the US, few empirical studies exist of the causes of dissent in Canadian Supreme Court. The current study seeks to close that gap in the literature, proposing and then testing what we call a Canadian model of dissent. We find that the likelihood of dissent is strongly related to four broad factors that appear to exert independent influence on whether the Court is consensual or divided: political conflict, institutional structure, legal ambiguity in the law and variations in the leadership style of the chief justice.Resume. Les causes de dissension dans les cours d'appel aux Etats-Unis font l'objet de nombreux articles et publications, mais il existe tres peu d'etudes empiriques sur les causes de dissidence a la Cour supreme du Canada. La presente etude vise a combler cette lacune en proposant, un modele canadien de dissension, puis en le mettant a l'epreuve. Nous avons constate que le risque de dissension est fortement lie a quatre facteurs generaux qui semblent exercer une influence independante, que la Cour soit en accord ou divisee. Ces facteurs sont le conflit politique, la structure institutionnelle, la presence d'une ambiguite juridique dans la loi et le style de direction du juge en chef.