The three-class franchise system (German: Dreiklassenwahlrecht) was an indirect election system used from 1848 to 1918 in the Kingdom of Prussia, and for shorter intervals in other German states. Voters were grouped into three classes such that those who paid most tax formed the first class, those who paid least formed the third, and the aggregate tax revenue of each class was equal. Voters in each class separately elected one third of the electors (Wahlmänner) who in turn voted for the representatives.