The Barack Obama Campaign is hold a series of large voter registration drives to encourage young adults in battleground states to be heard in the democratic process. Today there is FREE Jay-Z concert in Detroit at Cobo Arena. Tomorrow, Sunday October 5, 2008, on the eve of the voter registration deadline. The Obama for America campaign announced today the Grammy Award-winning musician Wyclef Jean will Jay-Z Grammy Award-winning rapper Jay-Z to headline a FREE concert and voter registration drive at Miami's Bayfront Park Amphitheater.