A more thorough explanation:

Definition: A voter is a person who has the right to vote and participates in the act of voting.

Example 1: John went to the polling station to cast his vote in the presidential election.

Example 2: Mary is a legal voter because she meets all the qualifications required to vote in her state.

These examples illustrate the definition of a voter. In example 1, John is a voter because he participated in the act of voting. In example 2, Mary is a voter because she has the necessary qualifications to vote.