Ideological congruence is the term generally used in comparative politics for the representative relationship between the general preferences of citizens and the perceived and stated position of government. This study provides a systematic comparative assessment of success and failure in achieving ideological congruence in nineteen developed parliamentary democracies from 1996 through to 2017. It then deconstructs the processes through which elections can connect citizens and governments into the three major stages: citizens' votes in parliamentary elections; the conversion of those votes into legislative representation; the election of prime ministers by their parliaments and the appointment of cabinet ministers. Analyzing these three stages shows that average distance from the median citizen increases at each stage, with only a few remarkable recoveries once congruence begins to go astray.

Ideological congruence is the term generally used in comparative politics for the representative relationship between the general preferences of citizens and the perceived and stated position of government. This study provides a systematic comparative assessment of success and failure in achieving ideological congruence in nineteen developed parliamentary democracies from 1996 through to 2017. It then deconstructs the processes through which elections can connect citizens and governments into the three major stages: citizens' votes in parliamentary elections; the conversion of those votes into legislative representation; the election of prime ministers by their parliaments and the appointment of cabinet ministers. Analyzing these three stages shows that average distance from the median citizen increases at each stage, with only a few remarkable recoveries once congruence begins to go astray.

Electoral rules help to make democracy work. Small variations in them influence the type of democracy that develops. The field of political science has defined the study of why and how this happens. Political scientists have contributed to the world of electoral systems as scientists and as engineers. Taking stock of recent scientific research, this report shows that context modifies the effects of electoral rules on political outcomes in specific and systematic ways. It explores how electoral rules shape party systems, the inclusion of women and minorities, the depth and nature of political competition, and patterns of redistribution and regulation. It considers institutional innovations that could promote political equality. Finally, the report describes the diverse ways that political scientists are producing an impact on the world by sharing and applying their knowledge of the consequences of electoral rules and global trends in reform.

Why do some democracies succeed while others fail? In seeking an answer to this classic problem, G. Bingham Powell, Jr. examines the record of voter participation, government stability, and violence in 29 democracies during the 1960s and 1970s. The core of the book and its most distinguishing feature is the treatment of the role of political parties in mobilizing citizens and containing violence.