Answer:
It uses the word voters, which repeats and reinforces the central idea of the essay.
Explanation:
By using the word voters, in the phrase the author reinforces the centrla idea of the essay which is inviting and promoting voting on off-year elections, which have the lowest voter turnout since people are not concerned with the positions that are elected on off-year elections, this helps encourage voters to be more involved with the situations and elections.
