President Mamadou Tandja was ousted on 18 February 2010 by a military coup d'état. The junta, called "Supreme Council for the Restoration of Democracy" and led by Salou Djibo, organised the transition. On 31 October 2010, a new constitution was adopted by referendum with 90.19% in favor and a 52.02% turnout (official results of 25 November).