KATHMANDU, Dec 16: The CPN (Maoist Center) will select the leader of the parliamentary party (PP) only after the MPs elected through the proportional representation election system get their certificates. Although the MPs elected through both the first past the post (FPTP) and the proportional representation (PR)  system have already been elected, the Maoist party will pick its PP leader only after the MPs elected through the PFR system receive their certificates.