Party leader is not pleased with gifts (8)
I believe the answer is:
presents
'gifts' is the definition.
('present' can be a synonym of 'gift')
'party leader is not pleased' is the wordplay.
I cannot quite understand how this works, but
'not' could be 'nt' (synonyms) and 'nt' is found in the answer.
'party leader' could be 'p' (leader of the word 'party') and 'p' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
'with' acts as a link.
Can you help me to learn more?
(Other definitions for presents that I've seen before include "donations" , "Hands over formally" , "special things at Christmas?" , "Hands over the gifts" , "Introduces" .)