A Republican secretary of state or county registrar of voters can target and remove voters in heavily Democratic precincts by sending them first class letters with a “do not forward” stamp on the envelope. If the letters are returned, for any reason, they use that as evidence that the voters do not live at that address and purge them from the voter rolls. If they show up to vote, they are challenged and, at best, required to cast a provisional ballot, with a good chance their vote will not be counted.Republican secretaries of state often create statewide “purge” or “scrub” lists. They find people with names that match someone else and use this as an excuse to assume they are the same person, trying to vote twice and delete them both from the voter rolls, often disregarding little things like Jr. and Sr. and differing middle initials.They also delete people with the same names as felons.