Country fellow’s entering for right to vote (9)
I believe the answer is:
franchise
'right to vote' is the definition.
(synonyms)
'country fellow's entering' is the wordplay.
'country' becomes 'france' (France is an example).
'fellow's' becomes 'his' (belonging to a man).
'entering' indicates putting letters inside.
'france' enclosing 'his' is 'FRANCHISE'.
'for' is the link.
(Other definitions for franchise that I've seen before include "Rights assigned by authorisation" , "The right to vote in a parliamentary election." , "rights of citizenship" , "commercial concession" , "Authorisation to sell a company's goods or services in a specified area" .)