As we know, Bolsheviks seemed to overthow Provisional Government easily in November Revolution. Many political parties are inspired and feel like taking over the same way. War Communism also contributed widespread economic ruin, and as a result Lenin got a lot of oppositions. However, Lenin overcame those challenges in the end.
Question: Why and How did Linin keep his position secure? What made Lenin survive? How was Lenin different from the Tsar, who failed in getting rid of his oppositions?