Populist electoral success and party system concentration: A cross-national analysis

Vlad Surdea-Hernea, Grigorii V. Golosov, Institute of Forest, Environmental and Natural Resource Policy, BOKU University, European Center for Populism Studies , School of Computational Social Sciences, European University at St Petersburg, St Petersburg

Party Politics: The International Journal for the Study of Political Parties and Political Organizations

Published online on May 23, 2026

Abstract

Party Politics, Ahead of Print.
Why does the electoral success of anti-establishment populist movements lead to fewer, rather than more, effective political parties? Using panel data from electoral democracies worldwide (1970–2020), we document a robust negative relationship between ...