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Ukraine’s 2020 local elections showed a radical transformation of the party system through the proliferation of local parties. While extant studies have examined the gradual nationalization of the party system, the rapid increase in party system localization, as observed in present-day Ukraine, has rarely been discussed. Combining qualitative evidence on the 2010s’ political processes and quantitative evidence from data analysis of Ukraine’s local election results in 2010, 2015, and 2020, this study demonstrates that party system localization was caused by influential mayors who rapidly accumulated power after the Euromaidan. This increase in mayoral authority has three main causes. First, institutional settings such as popular mayoral elections and the relative autonomy of city governments in the state structure provide mayors with unique powers at odds with other regional actors, such as the governors. Second, the decentralization reform initiated after the Euromaidan empowered mayors and city governments. Finally, Volodymyr Zelens’kyi’s recruitment pattern of governors and his party Servant of the People’s candidate selection process enabled mayors to cultivate their local power bases. This study offers an important implication for the idea of patronalism by indicating the geographical fragmentation of patronal politics.
Masatomo Torikai (Sun,) studied this question.