The midterm election outcome provided unexpectedly strong backing for Duterte and boosted his daughter, Vice President Sara Duterte, ahead of her impeachment trial in the Senate in July.

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.