Who may file a complaint?

Law No. 96/06 of 18 January 1996 to amendthe Constitution of 2  June 1972, amendedand supplemented by Law No. 2008/001 of 14 April 2008

Art. 48(2):

(2) Anychallenges in respect of the regularity of one of the elections  provided for in the preceding paragraph (presidential elections, parliamentaryelections and referenda) may be brought before the  Constitutional Council by any candidate,political party that  participated in theelection in the constituency concerned or any person acting as Government agentat the election.

Link:http://www.elecam.cm/uploads/media/the_constitution_rc_01.pdf

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

Art. 132(2):

The Constitutional Council shall rule on all petitionsfiled by any candidate, any political party which took part in the election orany person serving as a representative of the Administration for the election, requestingthe total or partial cancellation of election operations.