Voting rules are set by the individual states.
E.g. Wisconsin in a recent election - http://www.greenbayp...lists-get-ballots
Though a widely publicized law that requires voters to provide photo identification at the ballot box doesn't begin until next year, recall voters will have to sign their names on poll lists before they are given ballots in Tuesday's Democratic primaries, which include elections in Northeastern Wisconsin's 2nd and 14th Senate districts.
"If the voter refuses to sign the poll list, the voter will not be able to vote," said Nathaniel Robinson, elections division administrator with the state Government Accountability Board.
Voters with physical disabilities that prevent them from signing the poll lists are exempt from the rule.
Before the 2011 Voter ID Law took effect June 10, election workers were largely responsible for marking voters' names on poll lists to indicate who voted.
"They occasionally (mark) the wrong name or forget, which can cause problems," Kevin Kennedy, director of the Government Accountability Board, wrote in a statement Friday. "When someone shows up at the polls and finds out he has already been marked as having voted, it raises concerns about election fraud."
Kennedy said requiring voters to sign their names would cut down on clerical errors and also root out genuine cases of fraud.
Except, of course, when a person signs the wrong line as in the Brennan report... :-/
HTH!
Cheers,
Scott.