happening at american university as sort of almost like a town hall audience of students a key part of his base of course in 2008 and 2012. jenna. jenna: speaking of students, as we tie in the numbers we mentioned to our viewers at the top here, ed, do we know how many young people have signed up? we know how crucial that is for the law and the success of the law overall? reporter: look, jay carney has been saying at the podium recent days they think the young, healthy people they need to make this work are signing up more frequently. they haven t fleshed out details. we have to fact check and see whether this pans out. interesting, harvard university poll, study out yesterday, millenials, a key part of the president s base are starting to drift away. a majority are saying they re not in favor of the affordable care act now. a majority saying that the would like to see the president removed from office. they re disappointed. that is why the president is rallying base. of republicans