Replication Data for: The Parliamentary Origins of Party Strength in Western Europe before the Second World War
The Fragmentation of Parliamentary Party Systems dataset. Includes calculations of party-system fragmentation and the share of socialist party seats in Austria, Belgium, Britain, Denmark, Finland, France, Germany, Italy, the Netherlands, Norway, and Sweden from the emergence of parties or party groups until 2022 based on country historiography. These data thus cover times before full (male) suffra