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 Longitudinal Study of Party Change, 1950-1990*
A research project co-directed by

Robert Harmel, Texas A&M University, and Kenneth Janda, Northwestern University

Building on concepts and data from the original ICPP Project, Robert Harmel and Kenneth Janda undertook a longitudinal assessment of "Environment, Performance, and Leadership in Party Change" from 1950 to 1990. Their study covered 19 parties in four countries--the U.S., U.K, Germany, and Denmark--from the original set of 53 countries reported in Kenneth Janda, Political Parties: A Cross-National Survey.

Each party in the Harmel-Janda study was coded on numerous variables dealing with the party's issue positions and organizational characteristics annually from 1950 to 1990.

Link to country essays in the
ICPP 1980 and 2000 sites
Click on the party names for information posted
on the 19 parties in the Harmel-Janda study
00-United States
party system 1950-1962
party system 1963-2000

001 Democratic Party

002 Republican Party

01-United Kingdom
party system 1950-1962
party system 1963-2000

011 Labour Party

012 Conservative Party

013 Liberal Party

014 Social Democratic Party

party system 1950-1962
party system 1963-2000

121 Christian Democratic Union (CDU)

122 Social Democratic Party (SPD)

123 Free Democratic Party (FDP)

124 Green Party

party system 1950-1962
party system 1963-2000

201 Social Democratic Party

202 Moderate Liberal or Left (Venstre) Party

203 Conservative People's Party, Konservative Folkeparti

204 Social Liberal or the Radical Left Party (Radikale Venstre)

205 Socialist People's Party

206 Progress Party

207 Center Democratic Party

208 Christian People's Party

209 Left Socialist Party

Papers and publications employing data from the Harmel-Janda study

*Supported by the U.S. National Science Foundation, Joint Grants SES-911249 and SES-9112357