 The first Duma opened on 27 April 1906 after the 1905 revolution and was established by Nicholas II in his October Manifesto, with around 500 deputies; most radical left parties, such as the Socialist Revolutionary Party had boycotted the election, leaving the moderate Constitutional Democrats (Kadets) with the most deputies (around 180).Second came an alliance of slightly more radical leftists, the Trudoviks (Laborites) with around 100 deputies.To the right of both were a number of smaller parties, including the Octobrists.