Defining Progressive Politics: Municipal Socialism and Anti-Socialism in Contestation, 1889–1939

“Progressive” is usually seen to emerge as a political term in the late 1880s, signifying new liberalism and its alliance with social democracy. This is also the period in which Koselleck noted that “progress” became an empty “catchword,” used across the political spectrum. This paper explores this semantic shift. It focuses on two periods of “Progressive” municipal politics in Britain: the London Progressive Party elected in 1889, and the anti-socialist Progressive Parties of the inter-war years. It asks how the champions and opponents of municipal socialism could both call themselves “progressive” and what this reveals about the fracturing of liberalism.