Bewildered Tory joined (8)
I believe the answer is:
confused
'bewildered' is the definition.
(bewildered means confused or baffled)
'tory joined' is the wordplay.
'tory' becomes 'con' (abbreviation for Conservative).
'joined' becomes 'fused' (fused means joined together).
'con'+'fused'='CONFUSED'
(Other definitions for confused that I've seen before include "Haywire" , "Disorientated" , "Unable to think clearly, bewildered" , "at sea" , "Mixed up in fun codes" .)