Why did people decide to found political parties? How did they convince others to become members of this new organizational model? In the second half of the nineteenth century, the first party... Show moreWhy did people decide to found political parties? How did they convince others to become members of this new organizational model? In the second half of the nineteenth century, the first party organizations differed from previously existing mass political organizations, because they aimed for and had direct access to parliamentary representation. In contrast to previously existing parties that loosely organized the traditional political elite in parliament, the new mass parties were based on an extensive organizational body that included previously excluded social groups in politics. Combining political history with social science theory, this dissertation studies the ideas and practices of political activists who founded the first party organizations. The comparison of three case studies (the German Social Democratic Workers’ Party, the British National Liberal Federation and the Dutch Anti-Revolutionary Party) is based on primary sources including letters, diaries, autobiographies, minutes of meetings, brochures, newspapers and political programs in three different languages. Show less