Candidates linked to Philippine ex-leader Rodrigo Duterte appear to have won election victories, including Duterte himself, despite him being detained for alleged crimes against humanity.

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.

A Philippine midterm election may have leaned in President Ferdinand Marcos Jr's favour but the stronger-than-expected showing for estranged vice president and bitter rival Sara Duterte may have given him a jolt,