How much power did Stalin have over the Communist party?

Evidence that Stalin had complete power over the Bolshevik party and Russian Government...

-By 1939, Stalin had removed rivals from the Politburo, including Bukharin, Kamenev, Trotsky, who were the longest serving members. 

-Controlled secret police force who worked outside of the law, conducting purges resulting in the Great Terror 1935-38. 10% of the population dead.

-By 1930, Stalin filled Politburo with his supporters and loyal friends, accepted all his decisions.

-Decreased frequency of Politburo meetings so Stalin could run…