What is a mass party?

A mass party is a political organization that seeks to mobilize a large number of supporters, often encompassing a broad base of the population. These parties typically prioritize grassroots participation, emphasizing collective action and representation of the interests of various social groups. They often have a structured membership system and engage in extensive outreach activities to gain popular support, aiming to influence public policy and governance. Examples include major political parties that operate in democracies, such as the Democratic Party in the U.S. or the Labour Party in the U.K.