Chooses for office (6)
I believe the answer is:
elects
'chooses for office' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for elects that I've seen before include "Appoints through voting system" , "Selects by a vote" , "Selects by ballot" , "Chooses by vote" , "Votes in" .)