The Petrograd Soviet of Workers' and Soldiers' Deputies (, Petrogradskiy sovet rabochikh i soldatskikh deputatov) was a city council of Petrograd (Saint Petersburg), the capital of the Russian Empire. For brevity it is usually called the Petrograd Soviet (, Petrogradskiy sovet). During the revolutionary days the council tried to extend its jurisdiction nationwide as a rival power center to the Provisional Government creating what in the Soviet historiography is known as the Dvoyevlastiye (Dual power). Its committees were key components during the Russian Revolution and some of them lead up the armed revolt of October Revolution.