Equal status for one in political faction (6)
I believe the answer is:
parity
'equal status' is the definition.
(I've seen this before)
'one in political faction' is the wordplay.
'one' becomes 'i' (Roman numeral).
'in' means one lot of letters goes inside another.
'political faction' becomes 'party' (I've seen this in another clue).
'i' put inside 'party' is 'PARITY'.
'for' is the link.
(Other definitions for parity that I've seen before include "Equal status or pay" , "Equal condition" , "state of equality" , "Equality in status" , "Beginner" .)