Harsh after Tory squeeze (9)
I believe the answer is:
constrict
'squeeze' is the definition.
(synonyms)
'harsh after tory' is the wordplay.
'harsh' becomes 'strict' (I've seen this before).
'after' says to put letters next to each other.
'tory' becomes 'con' (abbreviation for conservative).
'strict' put after 'con' is 'CONSTRICT'.
(Other definitions for constrict that I've seen before include "Strangle" , "Strangulate" , "Inhibit" , "Make narrower" , "Tighten" .)