Voter identification laws

A voter identification law is a law that requires a person to show some form of identification to vote. In some jurisdictions requiring photo IDs, voters who do not have photo ID often must have their identity verified by someone else (such as in Sweden) or sign a Challenged Voter Affidavit (such as in New Hampshire) to receive a ballot to vote. Free or affordable voter or photo identification proving citizenship was argued to put no significant burden on voters. Voter ID was found to have no negative impact on voter turnout. Photo ID was required by 176 countries or jurisdictions for voting as of 2021.