[Vanguard] Labor Party Presidential Campaign Council, LP-PCC, yesterday, accused the ruling All Progressives Congress, APC, of a well-calculated and orchestrated campaign of calumny to discredit and delegitimise Mr Peter Obi, the presidential candidate, to compel him to abandon his right to seek redress in court, following the outcome of the last election which was adjudged both locally and internationally to have failed to meet any standard of credibility or fairness.