What remedies are available in the first instance?

Law No. 2012/001 of 19 April relating to theElectoral Code

Art. 132(2): The Constitutional Council shall rule on all petitions filed by anycandidate, any political party which took part in the election or any  person serving as a representative of theAdministration for the election, requesting the total or partial cancellationof election operations.

Art. 135 (1), (2):  In the event of cancellation of the elections,notification thereof shall forthwith be made to the Minister of TerritorialAdministration and  Elections Cameroon.

(2) Notwithstanding the provisions of Section 86 ofthis law, a new

election shall be held within no less than 20 (twenty)days and no more than  40 (forty) days ofthe date of cancellation.

Art. 168 (2): Electoral disputes and organization of anew election, as the case may be, shall be carried out in pursuance of theprovisions of Sections 132 to 136 of this law.

Link: http://www.elecam.cm/uploads/media/Electoral_Code_Fnl_.pdf