The decree set a runoff on July 6 in case no candidate gets an outright win. Candidates have until May 08, midnight to file applications, according to the decree.
President Ould Abdelaziz, in power since 2008, is barred from seeking a third term in office by the constitution.
The campaign for the election will start June 07 and will close June 20 at midnight.
Six presidential hopefuls including former defense minister, Mohamed Ould Cheikh Mohamed Ahmed, have so far announced they are contending the country’s top job.
Mohamed Ould Cheikh Mohamed Ahmed, also known as Ghazouni, is tipped as the likely successor to the outgoing president.