Ted Johnson Monica, Ludacris, Jermaine Dupri, and Jeezy are among those lending their voices to a new wave of radio and digital get out the vote spots for Joe Biden’s presidential campaign.With four weeks to go until the presidential election, the campaign has been tapping into showbiz for endorsements and support.These ads will be played on radio stations and on digital platforms, with a focus on African American voters in key battleground states.