Votes in favour (4)
I believe the answer is:
ayes
'votes in favour' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for ayes that I've seen before include "Those voting for the motion" , "Nautical affirmatives" , "They express assent" , "The yes votes at committee meeting" , "The yes-votes at committee meeting" .)