electress

noun2

1. •
   (historical) The wife of a German elector, often used as a title.

   • The Electress Magdalena Sybilla was a woman of character, virtuous, kind, conventional and managing. — 1938
2. •
   (old-fashioned, rare) A woman who can vote in an election.

   • I often wish I were, not a butterfly nor a bird—nothing so ridiculous—but an Electress! — 1868