The midterm polls have revitalised the Duterte family’s political fortunes and put his daughter Sara, who is currently vice-president, in the running for a presidential election in 2028 that could have far-reaching consequences for regional security and disputes in the South China Sea.

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.

The Philippines’s parliamentary elections reflect yet another vote between dynastic political families, but the outcome still has implications for Manila’s foreign policy towards Washington and