Elector n. : One who elects, or has the right of choice; a person who is entitled to take part in an election, or to give his vote in favor of a candidate for office.

Elector n. : Hence, specifically, in any country, a person legally qualified to vote.

Elector n. : In the old German empire, one of the princes entitled to choose the emperor.

Elector n. : One of the persons chosen, by vote of the people in the United States, to elect the President and Vice President.

Elector a. : Pertaining to an election or to electors.

Example:
How do you become an Elector for the democratic party in California?

Taxonomy
electors, Council of Electors, Empire, Elector Palatine, elections, king, electorate, Elector of Bavaria, vicar, Emperor, Elector of Hanover, Holy Roman Empire, office, Prince-elector, King of Bohemia, Duke, Bavaria, augmentations.

Defination from the web:
Elector) were the members of the electoral college of the Holy Roman Empire, having the function of electing the Holy ... The Elector of Hesse and Landgrave of Hesse-Kassel chose to retain the defunct electoral title until the state was annexed by Prussia, ...