Nigeria’s former Senate President and founding member of the Peoples Democratic Party (PDP), David Mark, has officially resigned from the party.
Mark’s resignation comes on the heels of his appointment as the interim national chairman of the African Democratic Congress (ADC), the newly adopted platform of a coalition of opposition parties gearing up for the 2027 general elections.

In a letter dated June 27 and addressed to his PDP ward in Otukpo, Benue State, Mark cited deep-seated internal crises, unresolved leadership tussles, and growing divisions within the PDP as reasons for his exit. He lamented that the party, which once dominated Nigeria’s political landscape, has suffered a serious loss of direction and credibility.
“I remained steadfast even after the party’s defeat in the 2015 presidential election, but the persistent leadership challenges and internal conflicts have left me with no choice,” Mark stated.
After consultations with his family and political associates, the former Senate President said he made the decision to align with the new opposition coalition under the ADC, describing it as a credible platform committed to safeguarding democracy and providing Nigerians with a viable political alternative.
As part of the interim leadership of the new coalition, former Osun State Governor, Rauf Aregbesola, has been named interim secretary alongside Mark.
The coalition’s move is seen as part of a broader strategy to present a united front against the ruling All Progressives Party (APC).