The aspect of Leninism is Multiparty political structure.
Step-by-step explanation:
Leninism is the political ideology for the organization of Vanguard party. Vanguards are the class conscious proletariat who mainly belong to working class society. They are called revolutionary vanguard.
Proletariats are the working class people whose main strength is labor power. Lenin proclaimed that dictatorship or autonomous functioning of the class conscious proletariats is necessary to establish socialism.
Leninism also shares the political, economical, social perspectives of Marxism and hence Marxist Leninism arose which was appropriate for the communist country like soviet Russia. Working class who are infused with political awareness would overthrow capitalism in imperial Russia was the belief of Lenin.