One measure, to be voted on Friday, would require hand counting of ballots. Critics say that it would create widespread confusion in a state pivotal to the presidential race.

If approved, the hand count rule would make Georgia the only state in the U.S. to implement such a requirement as part of the normal process of tabulating results, according to Gowri Ramachandran, the director of elections and security at New York University's Brennan Center for Justice,