Thats what built the middle class of america. That, with just hours to go until the first democratic debate. And the stakes could not be any higher. A senior clinton aid tells cnn she sees this debate as her chance to put her email troubles behind her and focus on the issues that she finds important. And we have learned that bill clinton is also in las vegas tonight. I want to bring in cnns Brianna Keilar and henderson who have a lot of knowledge about this. Its the night before this democratic debate. She chose to a a swipe at donald trump right ahead. Is this what we are going to see tomorrow . I think youre going to see her playing a bit of a general election game, but i also think this visit today to the trump hotel was her way of saying i am in town and i am here for this debate. Because for Hillary Clinton, as weve been reporting, she sees this as a chance to reset. She wants to talk about substance. She wants to connect with voters in a way the email controversy hasnt allowed he