The bloke's right-wing past (7)
I believe the answer is:
history
'past' is the definition.
(history is a kind of past)
'the bloke's right-wing' is the wordplay.
'the bloke's' becomes 'his'.
'right-wing' becomes 'Tory'.
'his'+'tory'='HISTORY'
(Other definitions for history that I've seen before include "Time passed" , "Study of past events" , "The record of past events" , "'... repeats itself'" , "Chronicle" .)