Starting in 1905, he was a politician of the Ukrainian Democratic-Radical Party (UDRP), established in Kiev.

[3] At the end of World War I, he was a member of the Ukrainian Party of Socialists-Federalists (UPSF) and Central Rada.

[4] In 1918, he served as the minister of education in a cabinet of Ukrainian People's Republic (UNR), headed by Vsevolod Holubovych.

[5] On 26 May 1920, Viacheslav Prokopovych became the prime minister of the UNR until 14 October 1920.

[6] In 1925–1939, he was also a founder and chief editor of Tryzub, published in Paris.