Annoyance suppressed by elected representative, who's worn out (5)
I believe the answer is:
tired
'worn out' is the definition.
(tired can mean worn out or fatigued)
'annoyance suppressed by elected representative' is the wordplay.
'annoyance' becomes 'ire' (I've seen this before).
'suppressed by' is an insertion indicator (I've seen this in other clues).
'elected representative' becomes 'td' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ire' inserted within 'td' is 'TIRED'.
'who's' is the link.
Can you help me to learn more?
(Other definitions for tired that I've seen before include "Played out" , "Physically or mental weary" , "Dressed once" , "Beat" , "Ready to drop" .)