A recent AP article highlights the issue of state voter lists and the problems these lists have caused during the presidential primaries. As required by the Help America Vote Act (HAVA), all states must develop a computerized database of registered voters. According to the article, Arizona, California, and New Mexico have all experienced problems with their voter lists. According to the Brennan Center for Justice, voter rolls are being used to keep legitimate voters off the rolls because of states haphazard attempts to "match" voter information to information in other state databases, such as DMV records. When voter records do not match other state records, voters are often then improperly purged from the rolls, sometimes because of spelling mistakes, typos, or nicknames. States can avoid these mistakes, according to the Brennan Center, by adopting flexible standards for their matching process and technological safeguards. For more information, see the Brennan Center's Policy Brief on Using Databases to Keep Eligible Voters Off the Rolls.