In the aftermath of the February Revolution, power was shared between the weak provisional government and the Petrograd Soviet. Then, on November 6 and 7, 1917 (or October 24 and 25 on the Julian calendar, which is why this event is also referred to as the October Revolution), leftist revolutionaries led by Bolshevik Party leader Vladimir Lenin launched a nearly bloodless coup d’état against the provisional government. The Bolsheviks and their allies occupied government buildings and other strategic locations in Petrograd, and soon formed a new government with Lenin as its head.