Open-mindedness from an elector, unusually (9)
I believe the answer is:
tolerance
'open-mindedness' is the definition.
(thesaurus)
'an elector unusually' is the wordplay.
'unusually' indicates anagramming the letters.
'an'+'elector'='anelector'
'anelector' anagrammed gives 'TOLERANCE'.
'from' is the link.
(Other definitions for tolerance that I've seen before include "Acceptance - permitted variation in measurement" , "Being indulgent" , "Willingness to accept the behaviour of others" , "Ability to resist pain" , "Indulgence" .)