Back from Holyrood: How mixed-member proportional representation and ballot structure shape the personal vote

Abstract

Research on mixed-member legislatures demonstrates that members face different incentive structures when cultivating a personal vote. In this article, we examine how Scotland’s adoption of a mixed-member proportional system (MMP) and a change in ballot structure affect the legislative activities undertaken and emphasised by Members of Scottish Parliament (MSPs). Utilising a range of measures of legislative behaviour, we find that MSPs representing constituencies spend less time legislating and more time engaged in constituent service work. Regional members, conversely, lodge more parliamentary motions when not listed on the ballot and sponsor more members’ bills than constituency-based colleagues when on the ballot. We conclude that electoral structures directly affect the representational styles MSPs adopt, while calling for conceptual reconsideration of the personal vote.