african-american voters who are going to be so critical to her winning the general. if she does, remember, they were a critical part of her victories throughout the primary, tam ron. >> all right, kristen, thank you very much, we'll keep following the latest developments from florida where that surprise visit took place. thank you very much, kristen. let's take a look now, thousands of people are waiting in line to see president obama speak at a hillary clinton rally in north carolina. they've been lining up for hours. with the line snaking throughout campus. with the president's highest approval rating of his second term, he has been one of course the most important sur galts. unc campus there. chris, for perspective here, this is a sitting president that is eagerly on the campaign trail. he's wanted on the campaign trail. very different from george w. bush's situation. very different when we saw al gore try to go it alone without bill clinton. this is also historic, his