Gift from people backing party (8)
I believe the answer is:
donation
'gift' is the definition.
(donation is a kind of gift)
'people backing party' is the wordplay.
'people' becomes 'nation'.
'backing' is a charade indicator (letters next to each other).
'party' becomes 'do' (do is a kind of party).
'nation' put after 'do' is 'DONATION'.
'from' acts as a link.
(Other definitions for donation that I've seen before include "presentation" , "present" , "Money given to charity" , "An offering or charitable gift" , "Gift or contribution" .)