Texas' new Voter ID law is getting its first statewide test during the constitutional amendment election that concludes Tuesday.
Thousands of voters have found their photo IDs don't match their voter registration cards. Whenever there is a mismatch an election judge will decide if the information is "substantially similar" to let the person vote.
Statistics obtained by The Associated Press show more than 5 percent of voters potentially do not have a valid ID to vote, and these people live disproportionately in counties with high poverty rates or a large percentage of minorities.
Texas Secretary of State spokeswoman Alicia Pierce says there are no reports of problems.
Civil rights groups say they are worried about voters with complex names and are monitoring the voting to detect any widespread problems.