 After the February Revolution the party was the main party in the first Ukrainian government, the General Secretariat of Ukraine which was headed by the Volodymyr Vynnychenko (USLDP).Eventually it came into coalition with another party of Federalists (Ukrainian Party of Socialists-Federalists), the proponent of the federalism with the Russian Republic and was in the opposition to the other truly nationalistically oriented parties in the country such as the Democratic Agrarian Party, the Union of Land Owners, and others.With time SDeky lost its popularity in favor of the Ukrainian Socialist Revolutionary Party (SR) that worked together with the peasant representatives and gaining a rapid popularity amongst military formations within Ukraine.