Aisha Yesufu announces defection from ADC to NDC, citing alignment with Peter Obi and political vision.
Media entrepreneur Dele Momodu alleges Obi fled ADC to avoid a tough political contest with Atiku Abubakar.
Lawmakers from multiple states leave ADC for NDC as party instability triggers mass defections.
ADC admits losing Obi and Kwankwaso is disappointing but insists its political goals remain unchanged.
Umar Ardo plans court action against INEC, claiming the Nigeria Democratic Congress was registered without meeting legal requirements.