Pennsylvania's top elections official is slated to testify at a hearing on the future of the state's tough new voter-identification law.
Secretary of State Carol Aichele is to take the witness stand Tuesday as the hearing enters its fifth day.
Lawyers trying to block the law from taking effect in the Nov. 6 election say more than 1 million voters lack the photo IDs that the law requires. State officials say the number is smaller and that they'll make sure all voters get proper IDs.
Plaintiffs in a lawsuit challenging the law say it's unnecessary. They claim it's an attempt by Republicans who control the Legislature to suppress voting by senior citizens, minorities and other groups and to give an advantage to GOP nominee-apparent Mitt Romney in the presidential election.
Check here for the acceptable photo ID on Election Day.