Vote for period to be reduced (3)
I believe the answer is:
yea
'vote' is the definition.
(thesaurus)
'period to be reduced' is the wordplay.
'period' becomes 'ye' (I can't justify this - if you can you should believe this answer much more).
'to be' becomes 'am'.
'reduced' means to remove the last letter.
'am' with its final letter removed is 'a'.
'ye'+'a'='YEA'
'for' is the link.
Can you help me to learn more?
(Other definitions for yea that I've seen before include "'She loves you, ... ... ...' (The Beatles)" , "-- or nay?" , "Affirmative in the British Parliament" , "Approval" , "Certainly (archaic)" .)