Voter, English reader (7)
I believe the answer is:
elector
'voter' is the definition.
('elector' can be a synonym of 'voter')
'english reader' is the wordplay.
'english' becomes 'e' (abbreviation).
'reader' becomes 'lector' ('lector' can be a synonym of 'reader').
'e'+'lector'='ELECTOR'
(Other definitions for elector that I've seen before include "One crossing" , "One entitled to vote" , "who's making his mark?" , "Citizen with a right to vote" , "One has a legal right to vote" .)