Hugenberg also sought to eliminate internal party democracy and instill a "führerprinzip" within the DNVP, leading to some members breaking away to establish the Conservative People's Party (KVP) in late 1929. More were to follow in June 1930, appalled by Hugenberg's extreme opposition to the cabinet of Heinrich Brüning, a moderate whom some within the DNVP wanted to support. Despite Hugenberg's background in industry, that constituency gradually deserted the DNVP under his leadership, largely due to a general feeling amongst industrialists that Hugenberg was too inflexible, and soon the party became the main voice of agrarian interests in the Reichstag. Hugenberg's unwillingness to have the DNVP enter the cabinet greatly embittered the industrialists who complained the DNVP under his leadership was a perpetual opposition party, and as such the largest contributor to the DNVP by 1931 had became Hugenberg himself, which had the effect of cementing his control.