Seesaw quorum (3)
I believe the answer is:
two
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">seesaw quorum</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for two that I've seen before include "Item" , "limited company?" , "Number of Gentlemen of Verona" , "Duo" , "Cardinal number" .)