Who did Stalin compete with two?

Stalin primarily competed with Leon Trotsky for leadership within the Soviet Communist Party after Lenin's death in 1924. Their rivalry was rooted in differing ideologies and approaches to socialism, with Trotsky advocating for global revolution and Stalin favoring "socialism in one country." This competition ultimately led to Trotsky's exile and the consolidation of Stalin's power. Additionally, Stalin faced opposition from other party members, such as Nikolai Bukharin and Grigory Zinoviev, as he solidified his control over the Soviet state.