Role, etc., for the voter (7)

I believe the answer is:

elector

I'm a little stuck... Click here to teach me more about this clue!

'the voter' is the definition.
('elector' can be a synonym of 'voter')

'role etc' is the wordplay.
'role etc' can be anagrammed to 'ELECTOR'.
But, I am not sure how the anagram is indicated.

'for' is the link.

Can you help me to learn more?

(Other definitions for elector that I've seen before include "One entitled to vote" , "Someone with the right to vote" , "I choose" , "one with an X" , "Germanic prince" .)

I've seen this clue in The Irish Independent.

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