Decline to vote (7)
I believe the answer is:
abstain
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">decline to vote</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for abstain that I've seen before include "not come down on either side" , "Desist" , "'Refrain from, voting or eating, say (7)'" , "Spare" , "Formally decline to vote" .)