Part of prison where voters will be found? (4)
I believe the answer is:
ward
'part of prison' is the definition.
('ward' is part of 'prison')
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ward that I've seen before include "Local administrative district" , "Electoral district; Mrs Humphry ---" , "Minor in the charge of a guardian" , "custody" , "One under the protection of another" .)