At least 30 states now require voters to produce some form of identification before casting their ballots. The requirements have become increasingly restrictive in recent years, often requiring that the voter supply a government-issued photo ID.
A study by the Brennan Center for Justice found that 11 percent of voting-age citizens lack such state IDs and that offices issuing them are inaccessible to many rural residents. Required IDs also can be expensive; ProPublica.com reports that the necessary documents can cost up to $25.
Voter ID supporters say the laws help prevent voter fraud, but there is no evidence that fraud is a significant problem. Instead, there is strong evidence that the voter ID movement is geared to denying the voting rights of particular groups -- minorities, the elderly, students and those with chronic illness – who are most likely to lack the required IDs.