Party Systems and Country Governance focuses on the variety of party systems across the world and their effects on country governance and the conceptualisation and measurement of country governance. International aid agencies have spent millions of dollars believing that the presence of stable party systems contributes to better country governance. This study largely supports the assumptions of the aid agencies. To measure governance, the authors used the existing World Bank Governance Indicators for 2007 on 212 countries. They collected parliamentary party data for 189 countries. The authors identified fifteen additional countries that did not hold elections for parliamentary parties and eight countries that held non-partisan elections, seating no deputies by party. Together these 212 countries account for virtually all the variations in party systems across the world.