One-party (12)
I believe the answer is:
totalitarian
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">one-party</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 totalitarian that I've seen before include "far from liberal" , "Of ultimate-State-control system" , "Tyrannical" , "Despotic" , "One-party" .)