know who to identify as yet. >> let's turn to the democrats. we've seen the democrats on the campaign trail this weekend, particularly courting the black voter. and the polls show joe biden with a wide lead among support of the black vote. but your analysis shows when you break it into generational portions, there's something he should be concerned about. >> yeah, among younger african-american voters, his support isn't nearly as strong. i modeled it out and basically what my model suggested was african-american voters under the age of 30, his support among them is probably less than 30%. he may not be leading. he may be in a tie with bernie sanders with those younger african-american voters. and that's something we see across the spectrum. those older voters, no matter what their race is they're much more firmly in joe biden's camp than those younger voters. and that's true within the african-american community. >> how concerning should that be? >> he's ahead in the polls right now so it shouldn't be too concerning. but, obviously, if, let's say,