A French Democrat therefore will get to suffer (7)
I believe the answer is:
undergo
'to suffer' is the definition.
(undergoing is a kind of suffering)
'a french democrat therefore' is the wordplay.
'a french' becomes 'un' ('a' in French).
'democrat' becomes 'd'.
'therefore' becomes 'ergo' (I've seen this before).
'un'+'d'+'ergo'='UNDERGO'
'will get' acts as a link.
(Other definitions for undergo that I've seen before include "Experience or live through" , "Guerdon (anag.)" , "Experience, be subjected to" , "Suffer reverse" , "Submit to an experience" .)