Tory stupid to see shrink (8)
I believe the answer is:
condense
'shrink' is the definition.
(I've seen this in another clue)
'tory stupid' is the wordplay.
'tory' becomes 'con' (abbreviation for conservative).
'stupid' becomes 'dense' (similar in meaning).
'con'+'dense'='CONDENSE'
'to see' is the link.
(Other definitions for condense that I've seen before include "Reduce volume" , "Compress or shrink" , "Make more concentrated or compact" , "contract?" , "precis" .)