Aside from SPD and USPD, the Catholic Centre Party took part, and so did several middle-class parties that had established themselves since November: the left-liberal German Democratic Party (DDP), the national-liberal German People's Party (DVP) and the conservative, nationalist German National People's Party (DNVP).
Xunto ao SPD e o USPD presentáronse o católico Centrista e varios partidos burgueses, que se formaron dende novembro: o liberal de esquerda Partido Democrático de Alemaña (DDP), o nacionalista liberal Partido Popular Alemán (DVP) e o conservador nacionalista Partido Popular Nacional de Alemaña (DNVP).