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,

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.

Here’s what to know about the crucial midterms and the rival dynasties at the heart of the Southeast Asian nation’s politics.