Conservative chap's into S&M, creating division (6)
I believe the answer is:
schism
'division' is the definition.
(I know that schism is a type of division)
'conservative chap's into sm' is the wordplay.
'conservative' becomes 'C' (UK political abbreviation).
'chap's' becomes 'His' (belonging to a man).
'into' is an insertion indicator.
'c'+'his'='chis'
'chis' inserted into 'sm' is 'SCHISM'.
'creating' is the link.
(Other definitions for schism that I've seen before include "Church disunity" , "Ecclesiastical breakdown" , "Formal split in a religion" , "Split (usually in church)" , "Split based on opposing beliefs" .)