"This would prevent you from going to the polls and claiming that you're Mary Smith so you vote as Mary Smith then you come back later and vote as Mary Joan," Campbell said. "Repeating was a problem a century ago and these laws would have been good for that, but it's a non-event now."
In trying to solve that problem, critics say, the new voter ID laws could disenfranchise hundreds of thousands of voters who cannot obtain the necessary documents. In Pennsylvania, where Metcalfe's voter ID law will be in effect for the November election, at least 90,000 eligible voters did not have an ID that met the law's requirements to vote, according to initial estimates by the Pennsylvania Department of State.
But Metcalfe said he does not think the voter ID law will prevent people from going to the polls.
"With every right comes a responsibility," the Pennsylvania lawmaker said. "There is a responsibility now in Pennsylvania that goes along with being able to vote and that is when you show up on Election Day to have that photo ID."