Right-wing faction helping … for payment! (13)
I believe the answer is:
consideration
'payment' is the definition.
(I've seen this before)
'right-wing faction helping' is the wordplay.
'right-wing' becomes 'con' (abbreviation for Conservative).
'faction' becomes 'side' (I've seen this before).
'helping' becomes 'ration' (a ration is a serving or helping).
'con'+'side'+'ration'='CONSIDERATION'
'for' acts as a link.
(Other definitions for consideration that I've seen before include "Study" , "Kindness" , "Reward; careful thought" , "Thoughtfulness - relevant factor" , "factor to be borne in mind" .)