Jay-Z's support of President Barack Obama is well documented. Hov recently hosted a fundraiser for the prez, during which they took some photos together, and it was rumored that his involvement in the campaign would extend beyond that. Sure enough, it's been revealed that Jay will appear at Obama's rally in Ohio this coming Monday, November 5. There, he will both introduce the president and perform for what will likely be a huge crowd. Other performers include Bruce Springsteen.