A sample of political wiles for constituents (5)
I believe the answer is:
parts
'constituents' is the definition.
(I know this)
'a sample of political wiles' is the wordplay.
'a sample of' suggests taking the first letters (an extract or sample of the clue).
'wiles' becomes 'arts' (I've seen this in another clue).
The first letter of 'political' is 'p'.
'p'+'arts'='PARTS'
'for' is the link.
(Other definitions for parts that I've seen before include "Leaves" , "bits" , "Areas" , "Components of strap" , "Strap (anag.)" .)