- OM (eds.) (2026), Brothers of Italy and the illiberal populist temptation in Western Europe, Special issue of Populism, under press.
- Heinisch Reinhard, Mazzoleni Oscar (eds.), (2024), Challenging Democracy: How Do Ideas of Populists and Disenchanted Citizens Align? Thematic Issue within the Journal Politics and Governance, vol. 12, 254 p.
- Lamour Christian, Mazzoleni Oscar (eds.) (2024) « Right-wing populism and borders », Special Issue with the Journal of Language and Politics, 23(3), 166 p.
- Basile Linda, OM (eds.) (2020) “Linking Sovereignism and Populism. Citizens and Parties in contemporary Western Europe, Special Issue of European Politics and Society (Journal), 2, pp. 21-270.
- Blokker Paul, OM (eds.) (2020) Judicial populism: the rule of the people against the rule of law, Special Issue of PACO-Partecipazione e conflitto (Participation and Conflict, Journal), 13, pp. 3-75.
- OM, Reinhard Heinisch, Emanuele Massetti (eds.) (2018), « Addressing the Territorial Dimension in Party-based Populism», numéro spécial de Comparative European Politics, 16(6) pp. 923-1050.