A Republican will cover range of points in response (6)
I believe the answer is:
answer
'response' is the definition.
(synonyms)
'a republican will cover range of points' is the wordplay.
'a republican will' becomes 'ar' (I can't justify this - if you can you should believe this answer much more).
'cover' is an insertion indicator.
'range of points' becomes 'NSWE' (four compass points).
'ar' placed around 'nswe' is 'ANSWER'.
'in' is the link.
(Other definitions for answer that I've seen before include "Be satisfactory" , "Response to a question" , "Solve - solution" , "Fulfil" , "Response - solution" .)