Date of referendumDate of merger Merger
December 7, 2003 December 1, 2005 Perm Oblast + Komi-Permyak Autonomous Okrug → Perm Krai
April 17, 2005 January 1, 2007 Krasnoyarsk Krai + Evenk Autonomous Okrug + Taymyr Autonomous Okrug → Krasnoyarsk Krai
October 23, 2005 July 1, 2007Kamchatka Oblast + Koryak Autonomous Okrug → Kamchatka Krai
April 16, 2006 January 1, 2008Irkutsk Oblast + Ust-Orda Buryat Autonomous Okrug → Irkutsk Oblast
Further proposals include:
merging Tyumen Oblast, Yamalo-Nenets Autonomous Okrug, and Khanty-Mansi Autonomous Okrug into Tyumen Krai;
merging Chita Oblast with the Agin-Buryat Autonomous Okrug;
merging the federal cities of Moscow and Saint Petersburg with the oblasts surrounding them (Moscow and Leningrad Oblast, respectively);
merging Arkhangelsk and Murmansk Oblasts, the Komi Republic, and the Nenets Autonomous Okrug into proposed Northern/Arctic Krai or a Republic of Pomor-Nenets.