Barack Obama's voter registration drive is getting a last-minute push.

The Democratic presidential candidate announced today the "Carolina Change Challenge" to encourage voters of all ages to register.

The challenge has a special focus on 17 year olds who will turn 18 by November. In North Carolina, those voters will also be able to cast ballots in the primary on May 6.

Over the weekend, all 20 Obama field offices sent out more than 1,000 volunteers to register "thousands and thousands" of new voters, according to Deputy National Campaign Manager Steve Hildebrand.

"We've registered Democrats, we've registered Republicans, we've registered independents," Steve said.

The top 10 volunteers and the top five high-school students who register the most voters will meet Obama during an upcoming visit.

As part of the campaign, actress and singer Tatyana Ali, best known for her role as Ashley on "The Fresh Prince of Bel-Air," will campaign for Obama on college campuses across the state Wednesday and Thursday.

North Carolina residents can register by Friday, April 11, or register and vote at one-stop sites between April 17 and May 3.