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Sarah F. Anzia; Olivia M. Meeks (May 2016). "Political Parties and Policy Demanders in Local Elections"(PDF). University of Maryland-Hewlett Foundation conference on Parties, Polarization and Policy Demanders. Diarsipkan(PDF) dari versi aslinya tanggal 8 October 2020. Diakses tanggal 14 February 2021.