The paper analyses personal, national and socio-professional structure of the Moravian Provincial Parliament in 1878-1918 trying to clear up how much its structure was affected by the consequences of expanding of suffrage, politicizing of the public and establishing of new politicalparties. Longtime dominant position of lawyers in this provincial government body was gradually subdued from that time on in favour of the fractional group interest representatives, especially agrarian, entrepreneurial and confessional ones.