Tory with diplomacy connection (7)
I believe the answer is:
contact
'connection' is the definition.
(I know that contact is a type of connection)
'tory with diplomacy' is the wordplay.
'tory' becomes 'con' (abbreviation for conservative).
'with' is a charade indicator (letters next to each other).
'diplomacy' becomes 'tact' (tact can mean diplomacy or sensitivity).
'con'+'tact'='CONTACT'
(Other definitions for contact that I've seen before include "Get in touch with" , "Communication" , "Useful acquaintance" , "securing current passage" , "Talk to" .)