Elected party chum in Asian peninsula (9)
I believe the answer is:
indochina
'asian peninsula' is the definition.
(Indochina peninsula)
'elected party chum' is the wordplay.
I cannot really understand how this works, but
'elected' could be 'in' and 'in' is present in the answer.
'party' could be 'do' (do is a kind of party) and 'do' is present in the answer.
'chum' could be 'china' (china plate is Cockney rhyming slang for mate) and 'china' is found within the answer.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
'in' acts as a link.
Can you help me to learn more?
(Other definitions for indochina that I've seen before include "peninsular area" , "Peninsula of south-eastern Asia" , "South-east Asian region" , "Vietnam etc" , "Southeast Asian peninsula -- I hand coin (anag)" .)