Caucus call (3)
I believe the answer is:
yea
'caucus call' 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 "'She loves you, ... ... ...' (The Beatles)" , "Affirmative vote" , "MP's 'Yes' vote" , "Positive vote" , "Emphatic agreement" .)