Toby's brother, John Rey, announced that he would run for the mayoralty of the city.
They are running under the Nationalist People's Coalition although Javier was endorsed by the Liberal Party.
Mayor Tiangco is running for a congressional post in the Lone District.
Each of Navotas's two legislative districts elects six councilors to the City Council.
The six candidates with the highest number of votes wins the seats per district.