Former Philippine President Rodrigo Duterte was almost certain to be elected mayor of his home city by a landslide on Monday, unimpeded by his detention at the International Criminal Court on charges of murder as a crime against humanity.

Despite his detention by the International Criminal Court, former Philippines President Rodrigo Duterte appeared to have been elected as mayor in his home city by a landslide, according to preliminary results on Tuesday.

Monday's outcome showed Duterte's influence remains far from diminished, despite an acrimonious fallout with Marcos, months of humiliating Congressional enquiries into her office's finances and the arrest and transfer to the International Criminal Court of her father, former President Rodrigo Duterte.