Tory with criminal record wants to fit in (7)
I believe the answer is:
conform
'to fit in' is the definition.
(thesaurus)
'tory with criminal record' is the wordplay.
'tory' becomes 'con' (abbreviation for Conservative).
'with' says to put letters next to each other.
'criminal record' becomes 'form' (I've seen this in other clues**).
'con'+'form'='CONFORM'
'wants' is the link.
(Other definitions for conform that I've seen before include "Fall into line" , "Follow the crowd" , "Toe the line" , "become fitter?" , "Match" .)