List of those eligible to vote (9,4)
I believe the answer is:
electoral roll
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">list of those eligible to vote</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for electoral roll that I've seen before include "Voting list" , "List of people" , "List of those eligible to vote" , "List of eligible voters" .)