Electoral Systems examines the six principle types of electoral system currently in use in more than seventy of the world's democracies. A common format is adopted throughout, dealing with explanations of how the system operates and its effects on the political system.Electoral Systems examines the six principle types of electoral system currently in use in more than seventy of the world's democracies. A common format is adopted throughout, dealing with explanations of how the system operates and its effects on the political system.