In the praxis of political science, the concept of the vanguard party, composed of professional revolutionaries, was first effected by the Bolshevik Party in the Russian Revolution of 1917. Lenin (Vladimir Ilyich Ulyanov), the first leader of the Bolsheviks, coined the term vanguard party, and argued that such a party was necessary in order to provide the practical and political leadership that would impel the proletariat to achieve a communist revolution. Hence, as a political-science concept and term, vanguard party most often is associated with Leninism; however, similar concepts (under different names) also are present in other revolutionary ideologies.