Both of President Bashir's main rivals, Sadiq al-Mahdi of Umma and Yassir Arman of the former southern rebels, the SPLM, are boycotting the presidential election.
The removal of Mr Turabi has cleared the way for the government to make its peace with two exiled northern politicians, Sadiq al-Mahdi, leader of the Umma Party, and Muhammad Osman Mirghani, leader of the Democratic Unionist Party.