"For" vote (3)
I believe the answer is:
yea
'for vote' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for yea that I've seen before include "Approval" , "Affirmative vote" , "Affirmative, colloquially" , "-- or nay?" , "Affirmative in the British Parliament" .)