President Rodrigo Duterte called on Tuesday Vice President Leni Robredo as incompetent.

This was the reason he wants to have an election for a transition leader once the proposal to shift to federal form of government succeeds, Duterte said.

"Once it is implemented, they can I said provide a provision there that the Office of the President shall be declared vacant but you have to call for an election. It cannot be a succession because I have no other agenda there except that I would like the Filipino to choose a new leader, especially it is a new structure and I have been an official of the structure of type of government which has been since time immemorial, unitary," he said in an interview in Pampanga.

Duterte said he would not resign because this would make Robredo the president.

"Look, I will not resign because it will make her president. My resignation is addressed to the people so that they can choose who they want. She (Robredo)? I don’t think she can ever be ready to govern a country. Reason? Incompetence," Duterte said.

Robredo has said she would unite all the opposition groups to be their leader. Celerina Monte/DMS