"Requiring voters to show proof of identity serves to protect the integrity and reliability of the electoral process and prevent in-person voter fraud," the Supreme Court said in its opinion.
The state law that was being challenged gives individuals several options for verifying their identity in order to obtain a ballot and vote.
Showing a valid Oklahoma driver's license or other approved form of photo identification — such as identification cards issued by the federal government or Indian tribes — are listed among the acceptable options.
