After three years out of power, Pakalitha Mosisili returned to office as prime minister in the
February 2015 general election as leader of the
Democratic Congress, defeating Prime Minister
Tom Thabane of the
All Basotho Convention. However, in November 2016 an agreement was announced between the deputy leader of the Democratic Congress,
Monyane Moleleki, and Thabane to remove Mosisili and install Moleleki as prime minister. Moleleki was suspended from the Democratic Congress in December 2016 and launched a new party, the
Alliance of Democrats, in January 2017. On 12 February 2017 Thabane returned to Lesotho from self-imposed exile, declaring that Prime Minister Mosisili no longer commanded a parliamentary majority and vowing to oust him in a vote of no confidence. He claimed that he was risking his life by returning. The new opposition alliance defeated Mosisili in a vote of no confidence on 1 March 2017 and proposed Moleleki's name as the new prime minister; Mosisili, faced with the choice of stepping aside in favor of Moleleki or calling an early election, chose the latter. He advised King
Letsie III to dissolve Parliament, and the King did so on 7 March, despite an opposition effort to obstruct the move. It was announced on 13 March that an early election would be held on 3 June 2017. ==Electoral system==