Dataset of New Parties and Party System Innovation in Western Europe since 1945

This dataset identifies and lists all the new parties emerged in Western Europe since 1945 and provides data about party system innovation, defined as the aggregate level of ‘newness’ recorded in a party system at a given election. Data are based on parliamentary elections (lower house) of 19 Western European countries since 1945. This dataset covers the entire universe of Western European elections held after World War II under democratic regimes. Data for Greece, Portugal and Spain have been collected after their democratizations in the 1970s.
This dataset follows the recent publication of an article [Emanuele, V. and Chiaramonte, A. (2016), 'A growing impact of new parties: myth or reality? Party system innovation in Western Europe after 1945', Party Politics, Online First, DOI:10.1177/1354068816678887. http://ppq.sagepub.com/content/early/2016/11/17/1354068816678887.full] analysing new parties and party system innovation in Western Europe in Western Europe and based on this dataset.

本数据集识别并列出1945年以来西欧地区出现的全部新兴政党，并提供政党制度创新（party system innovation）相关数据——该指标被定义为特定选举中某一政党体系内“新颖性”的总水平。数据基于1945年以来19个西欧国家的议会下议院选举结果。本数据集覆盖了二战后西欧民主政体下举行的全部议会选举，其中希腊、葡萄牙与西班牙的相关数据采集自其于1970年代完成民主化转型之后。

本数据集的构建依托于一篇近期发表的学术论文：Emanuele, V.与Chiaramonte, A.（2016）发表于《政党政治（Party Politics）》的《新兴政党影响力日益增强：迷思还是现实？1945年后西欧的政党制度创新》，该论文为在线优先刊发文章，DOI为10.1177/1354068816678887，原文链接：http://ppq.sagepub.com/content/early/2016/11/17/1354068816678887.full。该论文围绕西欧新兴政党与政党制度创新展开分析，并以本数据集作为核心研究基础。