Bolshevization of the Soviets
The Bolshevization of the Soviets was the process of winning a majority in the Soviets by the Russian Social Democratic Labor Party (Bolsheviks) in the second half of 1917. The process was particularly active after the Kornilov Rebellion during September – October 1917 and was accompanied by the ousting from these bodies of power previously moderate socialists, primarily the Socialist Revolutionaries and Mensheviks, who dominated them.

In the course of these processes, by the beginning of the October Revolution, the Bolsheviks were gaining a majority, primarily in the Soviets of Workers' and Soldiers' Deputies of large industrial cities, gaining up to 90% of the seats in the Petrograd Soviet and up to 60% in Moscow. On September 17, 1917, the Bolshevik Viktor Nogin became Chairman of the Presidium of the Moscow Soviet; on September 25, the Petrograd Soviet was headed by Leon Trotsky. Relying on their firm majority in the Petrograd Soviet, the Bolsheviks were able, despite the opposition of the All-Russian Central Executive Committee, to convene the Second All-Russian Congress of Soviets of Workers' and Soldiers' Deputies and prepare for the October Armed Uprising.
Q211201
Soviets
Concept
Q204911
Russian Social Democratic Labor Party
ORG
Q83372
Bolsheviks
Concept
Q2369584
Kornilov Rebellion
Concept
Q217009
Socialist Revolutionaries
ORG
Q191515
Mensheviks
Concept
Q42976
October Revolution
EVE
Q2249009
Petrograd Soviet
LOC
Q1390544
Viktor Nogin
PER
Q4304066
Moscow Soviet
MEDIA
Q33391
Leon Trotsky
PER
Q19908130
All-Russian Central Executive Committee
UNK
Q4041050
Second All-Russian Congress of Soviets of Workers' and Soldiers' Deputies
Concept
Q42976
October Armed Uprising
EVE
Q4091906
Bolshevization of the Soviets
UNK
1917-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1917
DATE
1917-10-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
October 1917
DATE
1917-09-17T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
September 17, 1917
DATE
+90^^http://www.w3.org/2001/XMLSchema#decimal
90
NUMBER
+60^^http://www.w3.org/2001/XMLSchema#decimal
60
NUMBER
+25^^http://www.w3.org/2001/XMLSchema#decimal
25
NUMBER
follows