The PDP, yesterday, alleged that the ruling APC has concluded plans to incarcerate 50 of its key members ahead of the 2019 general elections.
The party, however, said it would not crumble but remain irrepressible.
Many PDP chieftains are facing trial for various corruption allegations.
The PDP in a statement by its National Publicity Secretary, Prince Dayo Adeyeye, called on all well-meaning Nigerians to "challenge the government's attempt to turn Nigeria into a Gestapo state."
The PDP said President Muhammadu Buhari was not fighting corruption but using PDP members as scapegoats.