Party Switching in the Canadian House of Commons

Abstract

This thesis seeks to explain the phenomenon of party switching (or floor-crossing) in the understudied case of the Canadian House of Commons. It uses Müller and Strøm’s “Policy, Office or Votes?” framework at the individual level of analysis and a mixed methods approach that combines document analysis and econometrics to assess the effects of individual and institutional variables on the decision to switch parties. The results inform a wider discussion regarding individual political behavior as well as the role, influence and evolution of political parties in the Canadian state. The research demonstrates that the electorate is adept at recognizing opportunism and tends to respect MPs who switch parties on principle while punishing those that switch for more self-centered reasons.