Source : Webster's Revised Unabridged Dictionary (1913)

Electorate \E*lect"or*ate\, n. [Cf. F. ['e]lectorat.]
   1. The territory, jurisdiction, or dignity of an elector, as
      in the old German empire.

   2. The whole body of persons in a nation or state who are
      entitled to vote in an election, or any distinct class or
      division of them.

            The middle-class electorate of Great Britain. --M.
                                                  Arnold.

Source : WordNet®

electorate
     n : the body of enfranchised citizens; those qualified to vote